Photos show Buckingham Palace staff hanging a sign on its front gates announcing Prince Philip's death

• Prince Philip died Friday at the age of 99.
• Buckingham Palace staff members attached a notice outside the palace gates announcing his death.
• The Union Jack flag is also flying at half-mast on top of the palace.

A notice announcing Prince Philip's death has been attached to the front gates of Buckingham Palace in London.

Palace staff members placed the notice on the fence after it was announced that Queen Elizabeth II's husband had died at the age of 99.

The statement from Buckingham Palace 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."

The Union Jack flag was also seen flying at half-mast on top of Buckingham Palace to commemorate the longest-serving British consort's passing.