Photos: Britain mourns Prince Philip

An announcement is attached to the fence of Buckingham Palace after it was announced that Britain's Prince Philip, husband of Queen Elizabeth II, has died at the age of 99, in London, April 9, 2021.

A statement posted on the royal family's website Friday morning said: "It is with deep sorrow that Her Majesty The Queen announces the death of her beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh.

"His Royal Highness passed away peacefully this morning at Windsor Castle. Further announcements will made in due course. The Royal Family join with people around the world in mourning his loss."

People leave floral tributes outside Buckingham Palace in London.

Philip spent 65 years supporting the queen, retiring from his public role in 2017 and staying largely out of the view since.

The Union Jack flag is flown at half-staff above the Houses of Parliament in London.

People pay tribute at the Cambridge Gate at Windsor Castle, in Windsor, west of London.

People gather outside Buckingham Palace where the Union Flag flies at half-staff in central London.

Members of the public gather outside Buckingham Palace.

Mourners gather outside Buckingham Palace in London.

The Union flag flies at half-staff to mark the death at Edinburgh Castle in Edinburgh, Scotland.

Wardens of the Castle move floral tributes to the side of the driveway at the Henry VIII Gate of Windsor Castle.

The electronic billboard at Piccadilly Circus displays a tribute to Britain's Prince Philip, Duke of Edinburgh in central London.

A young boy places a flower on the gate at Buckingham Palace.

Jockeys and trainers stand for a minute of silence following the announcement of Philip's death at the Grand National Festival at Aintree Racecourse in Liverpool, England.

A billboard displays a picture in honor of Philip at a service station in Swansea, South Wales.

A man wearing an outfit in the style of a vintage ceremonial military uniform lays a floral tribute outside Buckingham Palace.

A woman lays down flowers outside the British embassy in Berlin.

Members of the Orange Order arrive to lay flowers outside Hillsborough Castle in Belfast, Northern Ireland.

The Flag of Wales flies at half-staff from the Keep at Cardiff Castle in Cardiff, south Wales.

Floral tributes outside Windsor Castle in Windsor, west of London.

A local resident lays flowers outside the British embassy in U.S. as he pays his respects in Washington.

Floral tributes collect at the gates of Buckingham Palace in London.

Cyclists pedal past a billboard with a tribute to Philip alongside the Clydeside Expressway in Glasgow, Scotland.

A man looks at flowers left as a memorial outside Hillsborough Castle in Northern Ireland.

Players from both sides observe a minute's silence to honor Philip ahead of the English Premier League football match between Fulham and Wolverhampton Wanderers at Craven Cottage in London.

A woman picks up a newspaper with a tribute to Philip on the front page at Leicester Square in London.

Photos: At the queen's side: Prince Philip through the years