UK's Prince Philip dies aged 99: Buckingham Palace (4)

File photo taken on June 17, 2015 shows Queen Elizabeth II and her husband Prince Philip arriving for day 2 of Royal Ascot at Ascot Racecourse in Ascot, Britain. Britain's Prince Philip, Queen Elizabeth II's husband, has died at the age of 99, Buckingham Palace announced Friday. (Xinhua/Han Yan)