The British royal family released a brief statement that read:
"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."
Philip, who was born in Greece, married the then Princess Elizabeth in 1947, five years before she became Queen. The couple had four children, eight grandchildren and 10 great-grandchildren.