Prince Harry says he warned Twitter CEO about US Capitol riot

The Prince and Princess of Wales, Prince Charles and Princess Diana leave St. Mary's Hospital in Paddington, London with their new baby son on Sept. 16, 1984. Princess Diana carries new baby, Prince Harry who was born on Sept. 15. (AP Photo)

FILE - In this Sunday, Aug. 9, 1987 file photo, Diana, the Princess of Wales holds son Prince Harry while royal families posed for photographers at the Royal Palace, in Majorca, Spain. (AP Photo/John Redman, File)

Britain’s Prince Harry waves to photographers on his first day at a kindergarten in Notting Hill, West London on Sept. 16, 1987. (AP Photo/Martin Cleaver)

FILE - In this June 11, 1988 file photo, Britain's Prince Harry sticks out his tongue for the cameras on the balcony of Buckingham Palace in London. Long dismissed as a party boy, Prince Harry has transformed himself in the public eye and enjoys widespread popularity as he prepares to marry Meghan Markle on May 19, 2018. Harry has become a forceful advocate for veterans and won admiration by speaking openly about his struggle with the pain caused by the early death of his mother, Princess Diana. (AP Photo/Steve Holland)

Britain's Prince Charles and Princess Diana and their sons, Princes William, right, and Harry begin a cycle ride, June 1, 1989, around the island of Tresco, one of the Scilly Isles. The royal family was vacationing in the islands, located off the southwest tip of Britain. (AP Photo)

Members of the British Royal Family, including Queen Elizabeth II, Prince Philip, The Prince and Princess of Wales, Princess William and Harry (center), watch a fly past to mark the Queen's official birthday, from the balcony of Buckingham Palace, Saturday, June 16,1990. Others are unidentified. (AP Photo)

FILE - In this file photo dated Sunday May 7 1995, Princess Diana offers her son Prince Harry a drink of water during a open air ceremony to mark the 50th anniversary of VE Day, the end of World War II in Europe, in Hyde Park, London. (AP Photo/Jacqueline Arzt, FILE)

Britain's Prince of Wales leads his son Harry, left and William, right, onto the slopes above the alpine skiing resort of Klosters in Switzerland on the first full day of their skiing holiday Tuesday Jan 2 1996. (AP-PHOTO/ARNO BALZARINI)

FILE - In this Thursday July 17, 1997 file photo, Britain's Princess Diana rides a personal watercraft with her son Prince Harry, steering, in Saint Tropez, on the French Riviera, where she is spending a few days holidaying. (AP Photo/Lionel Cironneau, File)

FILE - In this Friday, Sept. 5, 1997 file photo Britain's Prince Charles, right, accompanies his sons Prince William, left and Prince Harry after they arrived at Kensington Palace to view tributes left in memory of their mother Princess Diana in London. (AP Photo/David Brauchli, File)

Prince Harry, the younger son of the Prince of Wales, sits in his room at Eton College in this May 12, 2003 photo. Prince Harry, third in line to the British throne, has been revealed as an artistic and sporty teenager in a series of intimate photographs released to mark his departure from the exclusive Eton College at Windsor. (AP Photo/PA, Kirsty Wigglesworth/pool)

Britain's Prince Harry coaching tag rugby Tuesday Sept. 28, 2004, to school children at Greenfield Primary School in Shelfield, England. The prince is spending six weeks of his university gap year helping Rugby Development Officers provide coaching to schools, clubs and communities throughout England. The sports mad 20-year old surprised pupils at Greenfield Primary School by dropping in to help them master his favourite game. (AP Photo / John Stillwell, PA)

Britain's Prince Harry, wearing a blue cap, talks with unidentified people at a farm in Lobos, same 150 kilometers (90 miles) southwest of Buenos Aires, Friday, Nov. 12, 2004. Prince Harry arrived in Argentina for a stay of several weeks to work on a polo horse farm before he is scheduled to join the British army next year. (AP Photo/Alfredo Sanchez-La Nacion) **Argentina Out**

Prince William, left, and his brother Prince Harry, pose with young participants before taking part in the Sport Relief London Mile, Saturday July 10, 2004. Prince Harry was prevented from running by an injured knee in training. More than 70,000 people in Britain have signed up to run a mile for charity at 144 official events to raise money to tackle poverty and help disadvantaged people in the UK and abroad in an event organised by Comic Relief and BBC Sport. A five hour television special featuring stars of sport and screen will also air Saturday.. (AP Photo/ Andrew Parsons, Pool)

Britain's Prince Harry talks with his cousin Zara Phillips, daughter of Princess Anne, after watching the England - Australia rugby international at London's Twickenham stadium Saturday Nov. 27, 2004. Prince Harry had arrived home earlier in the week from Argentina, amid media speculation that shots were fired at the ranch where he was staying.(AP Photo/Adam Butler)

Britain's Prince Harry looks out from a coach as he watches Prince Charles and his bride Camilla, Duchess of Cornwall , leave St George's Chapel in Windsor, England, following the church blessing of their civil wedding ceremony, Saturday April 9, 2005. (AP Photo/ Alastair Grant- POOL)

Prince William, left, and Prince Harry, 2nd left, (Prince Charles' sons) and Peter Phillips, 2nd right, and Zara Phillips, right, (son and daughter of Princess Anne) arrive with other royals and wedding guests at Windsor Castle after the civil wedding of Camilla, Duchess of Cornwall to Britain's Prince Charles at Windsor Guildhall , Saturday, April 9, 2005. (AP Photo / Martyn Hayhow, Pool)

The Prince of Wales, center, with his sons Harry, left, and William, right, during a media photocall Thursday, March 31, 2005, in Monbiel near the Swiss resort of Klosters, where they are on their annual skiing holiday. (AP Photo/Keystone/Arno Balzarini)

Britain's Prince Charles, Camilla, Duchess of Cornwall and Prince Harry, from left, watch from the balcony of Buckingham Palace, London, Sunday July 10, 2005 as a Lancaster bomber from the RAF Battle of Britain Memorial Flight drops one million poppies over The Mall as part of a day of events marking the end of the Second World War. (AP Photo/ James Vellacott, Pool)

Britain's Prince William, right and Prince Harry, speak to the media after helping with the packing of aid items bound for the Indian Ocean archipelego the Maldives, which were affected by the Dec.26 Indian Ocean quake, at a Red Cross depot, near Bristol western England Friday Jan. 7, 2005. (AP Photo/ Barry Batchelor, Pool, WPA)

Britain's Prince Harry, center, swapped his military uniform for a bowler hat and smart suit Sunday, May 14, 2006, as he took part in an army parade in London. The 21-year-old grandson of Queen Elizabeth II joined the march by 2,000 soldiers, including former and current members of his Blues and Royals regiment, in London's Hyde Park. By tradition, the marchers wear a suit and bowler, reflecting the "proper order of dress" for off-duty soldiers before World War I, when the march was instituted. (AP Photo/Stefan Rousseau/PA)

Britain's Prince Harry, second from right, grins and his grandmother Queen Elizabeth II smiles, as she inspects the Sovereign's Parade at the Royal Military Academy in Sandhurst, England Wednesday April 12, 2006. Prince Harry was on of the cadets passing out as a commissioned officer, and will join the Blues and Royals, part of the Household Cavalry, and one of Britain's oldest army regiments. (AP Photo/Dylan Martinez, pool)

Britain's Prince Harry pokes his tongue out at Mutsu Potsane, aged 6, in the grounds of the Mants'ase children's home, while on a return visit to Lesotho, Monday, April 24, 2006. The Prince was in the country to launch his new charity called 'Sentebale', which means 'Forget me not' in memory of his mother Diana, Princess of Wales. (AP Photo/John Stillwell, Pool)

Britain's Prince Harry uses a hoe as he helps the villagers of Phororong to turn over the ground of their maize fields high in the Northern Mountains, while on a return visit to Lesotho, Tuesday April 25 2006. The Prince was in the country to launch his new charity called 'Sentebale', which means 'forget me not' in memory of his mother Diana Princess of Wales. See PA story ROYAL Harry. Photo credit should read: John Stillwell / PA / WPA Rota.

In this picture released by Ministry of Defence in London, Tuesday April 11, 2006, Britain's Prince Harry, right, takes part in his final training exercise, in Cyprus, in March 2006. Prince Harry is scheduled to pass out at the Royal Military Academy at Sandhurst on April 12, in front of his grandmother, Queen Elizabeth II, after completing a 44 week officer training course. The Prince is joining the Blues and Royals which forms part of the Household Cavalry, the oldest and most senior regiment in the British Army.(AP Photo/Corporal Ian Holding, Ministry of Defence, pool)

Britain's Prince William, center, his girlfriend Kate Middleton and brother Prince Harry watch an England versus Italy Six Nations rugby match at Twickenham stadium in London, in this Saturday Feb. 10, 2007 file photograph. (AP Photo/Alastair Grant, File)

In this image made available in London, Thursday Feb. 28, 2008, Britain's Prince Harry patrols through the deserted town of Garmisir, Afghanistan, close to Forward Operating Base Delhi, on Wednesday Jan. 2, 2008. Prince Harry has been serving on the front line in Afghanistan with the British Army, according to an announcement by Britain's Ministry of Defence. The Prince, who is third in line to the throne, and is still deployed in the country, has been in Afghanistan since December. The deployment was not reported due to an agreement between the Ministry of Defense and news organizations, including The Associated Press. The story was leaked by an Australian magazine and a German newspaper. (AP Photo/John Stillwell, pool)

** FILE ** In this Feb. 20, 2008 file picture, Britain's Prince Harry is seen playing rugby with fellow soldiers during a break in their duties in Helmand province, southern Afghanistan. Prince Harry's secret tour of duty, due to last until April, was abruptly ended after a magazine and Web sites disclosed details of his whereabouts. (AP Photo/John Stillwell, pool)

Britain's Prince Harry races in the gym during a tour of the Harlem Children's Zone school in the Harlem neighborhood of New York, Saturday, May 30, 2009. (AP Photo/Lucas Jackson, Pool)

Britain's Prince Harry, second left and Prince Seeiso of Lesotho, second from right, speak to students during a tour of the Harlem Children's Zone school in the Harlem neighborhood of New York, Saturday, May 30, 2009. (AP Photo/Lucas Jackson, Pool)

FILE - In this Thursday, June 18, 2009 file photo Britain's Prince Harry smiles during a photocall at RAF (Royal Air Force) Shawbury in Shropshire, England. (AP Photo/Kirsty Wigglesworth, File)

Britain's Prince Harry talks to Corporal Todd Nicely at the Achilles Hope and Possibility Race at New York's Central Park on Sunday, June 27, 2010. (AP Photo/John Angelillo, Pool)

The Duke and Duchess of Cambridge arrive along with Prince Harry, right, at the Imperial War Museum for 'A Night of Heroes: The Sun Military Awards', in London, Monday Dec. 19, 2011. (AP Photo / Arthur Edwards, Pool)

Britain's Prince Harry, right, and Olympic sprint champion Usain Bolt run during a mock race in Kingston, Jamaica, Tuesday March 6, 2012. The Prince is in Jamaica as part of the Diamond Jubilee tour in honor of Queen Elizabeth II who celebrates 60 years on the throne. His visit comes as the new prime minister, Portia Simpson Miller, has called anew for the severing of ties with the British monarchy. (AP Photo/Collin Reid)

Britain's Prince Harry, right, smiles as he chats to Sean and Katie Thompson, and their daughter nine-month-old Jessica, during a visit to RAF Honington, near Bury St Edmunds in eastern England, Friday Feb. 10, 2012. The 27-year-old is Honorary Air Commandant of the military base and will present a selection of service commendations to RAF personnel, before being shown some of the base's service capabilities. (AP Photo/Chris Radburn, Pool)

Britain's Prince Harry playfully sticks out his tongue as he poses for a photo during his visit to the Complexo do Alemao slum, in Rio de Janeiro, Brazil, Saturday, March 10, 2012. Harry is in Brazil at the request of the British government on a trip to promote ties and emphasize the transition from the upcoming 2012 London Games to the 2016 Olympics in Rio de Janeiro. (AP Photo/Silvia Izquierdo)

First lady Michelle Obama, left, brings Prince Harry in for a surprise visit at an event where children of military mothers were making Mother's Day gifts in the State Dining Room of the White House in Washington, Thursday, May 9, 2013. (AP Photo/Jacquelyn Martin)

Schoolgirl Kian Hurn, 15, centre right, laughs after she posed for photographs with Britain's Prince Harry, centre, former England rugby star Jason Robinson, left, and her schoolmates from Stone Hill High School following a coaching session at Twickenham Stadium in London, Thursday, Oct. 17, 2013 for young people from participating secondary schools across the country. (AP Photo/Lefteris Pitarakis)

England's Prince Harry visits Section 60 at Arlington National Cemetery, Friday, May 10, 2013. The British soldier-prince is spending most of his week in the U.S. honoring the wounded and the dead of war. (AP Photo/Charles Dharapak, Pool)

Britain's Prince Harry warms his hands after a cold chamber training exercise with the Walking with the Wounded South Pole Allied Challenge 2013 British team at Nuneaton, central England, Tuesday Sept. 17, 2013. Prince Harry joined the team inside the whole-vehicle environmental test chambers which simulate the extreme conditions they will face in the South Pole. (AP Photo/Darren Staples)

In this photo taken Nov. 2, 2012, made available Monday Jan. 21 2013 of Britain's Prince Harry or just plain Captain Wales as he is known in the British Army, gives a TV interview by his Helicopter at the British controlled flight-line in Camp Bastion southern Afghanistan. The Ministry of Defense announced Monday that the 28-year-old prince is returning from a 20-week deployment in Afghanistan, where he served as an Apache helicopter pilot with the Army Air Corps. (AP Photo/ John Stillwell, Pool)

Kate Duchess of Cambridge talks to Prince Harry who points to a large video screen watch the early rounds of the men's and women's gymnastic competitions at the Commonwealth Games Glasgow 2014, in Glasgow, Scotland, Monday, July, 28, 2014. (AP Photo/Alastair Grant)

Britain's Prince Harry, right, meets students at composite school Southern Cross Campus in Auckland, New Zealand, during a visit Friday, May 15, 2015. (Diego Opatowski/Pool Photo via AP) NEW ZEALAND OUT, AUSTRALIA OUT

Britain's Prince Harry, right, meets well wishers after laying a wreath at the Tomb of the Unknown Soldier at the Australian War Memorial in Canberra, Australia Monday, April 6, 2015. Prince Harry, or Captain Harry Wales as he is known in the British Army, will end his military career with a month long assignment with the Australian Defense Force in barracks in Sydney, Perth and Darwin. (AP Photo/Andrew Taylor)

Britain's Prince Harry celebrates as his team scored a scored during a charity polo match at Valiente Polo Farm, Wednesday, May 4, 2016, in Wellington, Fla. Prince Harry is participating in a Sentebale polo charity match which specializes in helping children that have been affected by the AIDS and HIV epidemic. (AP Photo/Alan Diaz)

Britain's Prince Harry plays polo at Valiente Polo Farm, Wednesday, May 4, 2016, in Wellington, Fla. Prince Harry is participating in a Sentebale polo charity match which specializes in helping children that have been affected by the AIDS and HIV epidemic.(AP Photo/Alan Diaz)

Britain's Prince Harry and Meghan Markle pose for the media in the grounds of Kensington Palace in London, Monday Nov. 27, 2017. It was announced Monday that Prince Harry, fifth in line for the British throne, will marry American actress Meghan Markle in the spring, confirming months of rumors. (Eddie Mulholland/Pool via AP)

Britain's Prince Harry and his fiancee Meghan Markle pose for photographers during a photocall in the grounds of Kensington Palace in London, Monday Nov. 27, 2017. Britain's royal palace says Prince Harry and actress Meghan Markle are engaged and will marry in the spring of 2018. (AP Photo/Matt Dunham)

Britain's Prince Harry and Meghan Markle watch a dance performance by Jukebox Collective Cardiff Castle in Cardiff, Wales, Thursday, Jan. 18, 2018. During their tour, Prince Harry and Ms. Markle will hear performances from musicians and poets, meet sportsmen and women, and see how organisations are working to promote Welsh language and cultural identity. (Ben Birchall/Pool Photo via AP)

FILE - In this Tuesday, Dec. 25, 2018 file photo, Britain's Prince William, left, Kate, Duchess of Cambridge, second left, Meghan Duchess of Sussex and Prince Harry, right, arrive to attend the Christmas day service at St Mary Magdalene Church in Sandringham in Norfolk, England. Prince William infuriated Prince Harry when he told his younger brother he should move slowly in his relationship with the former Meghan Markle, fearing that he was being “blindsided by lust,’’ a new book on the Windsors says. The second installment of a serialized version of the book “Finding Freedom,” which appeared in the Sunday Times, Sunday, July 26, 2020 claimed that Harry was angered by what he perceived to be as William’s snobby tone in a discussion about the American actress. (AP Photo/Frank Augstein, file)

FILE - In this Saturday, May 19, 2018 file photo the newly married Duke and Duchess of Sussex, Meghan Markle and Prince Harry, leave Windsor Castle in a convertible car after their wedding in Windsor, England, to attend an evening reception at Frogmore House, hosted by the Prince of Wales. Prince Harry and his wife Meghan are ending their lives as senior members of Britain’s royal family and starting an uncertain new chapter as international celebrities and charity patrons. In January the couple shocked Britain by announcing that they would step down from official duties, give up public funding, seek financial independence and swap the U.K. for North America. The split becomes official on March 31. (Steve Parsons/pool photo via AP, File)

Britain's Prince Harry, left, reacts as he walks with his best man, Prince William the Duke of Cambridge, as they arrive for the the wedding ceremony of Prince Harry and Meghan Markle at St. George's Chapel in Windsor Castle in Windsor, near London, England, Saturday, May 19, 2018. (Ben Birchhall/pool photo via AP)

FILE - In this Saturday, May 19, 2018 file photo, Britain's Prince Harry and Meghan Markle ride in an open-topped carriage after their wedding ceremony at St. George's Chapel in Windsor Castle in Windsor, England. Prince Harry and his wife Meghan are ending their lives as senior members of Britain’s royal family and starting an uncertain new chapter as international celebrities and charity patrons. In January the couple shocked Britain by announcing that they would step down from official duties, give up public funding, seek financial independence and swap the U.K. for North America. The split becomes official on March 31. (Aaron Chown/pool photo via AP, file)

FILE - In this Friday, Oct. 19, 2018 file photo Britain's Prince Harry and Meghan, Duchess of Sussex meet with a local surfing community group, known as OneWave, raising awareness for mental health and wellbeing in a fun and engaging way at Bondi Beach in Sydney, Australia. Prince Harry and his wife Meghan are ending their lives as senior members of Britain’s royal family and starting an uncertain new chapter as international celebrities and charity patrons. In January the couple shocked Britain by announcing that they would step down from official duties, give up public funding, seek financial independence and swap the U.K. for North America. The split becomes official on March 31. (Dominic Lipinski/Pool via AP)

Britain's Prince Harry and Meghan, Duchess of Sussex receive native flowers from Finley Blue and Dasha Gallagher, left, at Taronga Zoo in Sydney, Australia, Tuesday, Oct. 16, 2018. Prince Harry and his wife Meghan are on a 16-day tour of Australia and the South Pacific.(AP Photo/Kirsty Wigglesworth,Pool)

Britain's Prince Harry and Meghan, Duchess of Sussex meet 98-year-old Daphne Dunne during a walkabout outside the Opera House in Sydney, Australia, Tuesday, Oct. 16, 2018. (Paul Edwards/Pool Photo via AP)

Britain's Prince Harry, left, and Meghan, Duchess of Sussex walk along Kingfisher Bay Jetty during a visit to Fraser Island, Australia, Monday, Oct. 22, 2018. Prince Harry and his wife Meghan are on day seven of their 16-day tour of Australia and the South Pacific. (AP Photo/Kirsty Wigglesworth, Pool)

Britain's Prince Harry and Meghan, Duchess of Sussex, during a photocall with their newborn son, in St George's Hall at Windsor Castle, Windsor, south England, Wednesday May 8, 2019. Baby Sussex was born Monday at 5:26 a.m. (0426 GMT; 12:26 a.m. EDT) at an as-yet-undisclosed location. An overjoyed Harry said he and Meghan are "thinking" about names. (Dominic Lipinski/Pool via AP)

Britain's Prince Harry salutes after he and his wife Meghan the Duchess of Sussex each placed a Cross of Remembrance as they attend the official opening of the annual Field of Remembrance at Westminster Abbey in London, Thursday, Nov. 7, 2019. The Field of Remembrance pays tribute to all the people who have served in the British armed forces since World War I. (AP Photo/Matt Dunham)

Prince Harry and Meghan, the Duke and Duchess of Sussex arrive at the annual Endeavour Fund Awards in London on March 5, 2020. A judge in London on Wednesday, July 29, 2020 is hearing the latest stage in the Duchess of Sussex’s privacy-infringement lawsuit against a British newspaper, as Meghan tries to keep the names of five of her friends out of the public eye. The former Meghan Markle is suing the publisher of the Mail on Sunday at Britain’s High Court over five articles that published portions of a handwritten letter she wrote to her estranged father, Thomas Markle. (AP Photo/Kirsty Wigglesworth, File)

Britain's Prince Harry gestures in the gardens of Buckingham Palace in London, Thursday, Jan. 16, 2020. Prince Harry, the Duke of Sussex will host the Rugby League World Cup 2021 draw at Buckingham Palace, prior to the draw, The Duke met with representatives from all 21 nations taking part in the tournament, as well as watching children from a local school play rugby league in the Buckingham Palace gardens. (AP Photo/Kirsty Wigglesworth)

Britain's Prince Harry and Meghan, Duchess of Sussex leave after attending the annual Commonwealth Day service at Westminster Abbey in London, Monday, March 9, 2020. The annual service organised by the Royal Commonwealth Society, is the largest annual inter-faith gathering in the United Kingdom. (AP Photo/Frank Augstein)

FILE - In this Saturday March 7, 2020 file photo, Britain's Prince Harry and Meghan, Duchess of Sussex arrive at the Royal Albert Hall in London, to attend the Mountbatten Festival of Music. (Simon Dawson/Pool via AP, file)