Buckingham Palace is in mourning after the Duke of Edinburgh, Prince Philip died.
A statement from the Royal Family posted on Twitter 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."
The statement said he "passed away peacefully at Windsor Castle."
His Royal Highness recently spent three weeks in the hospital for a heart ailment.
He was 99.
Philip retired from his public role in 2017 and has largely stayed out of public view since.
He was born June 10, 1921 on the Greek island of Corfu, son of Prince Andrew of Greece and Denmark, and Princess Alice of Battenburg. His father was forced to abdicate when Philip was just an infant.
After graduating from Britannia Royal Naval College at the age of 18, he joined the World War II effort. He was in Tokyo Bay when Japan surrendered in 1945.
He and then Princess Elizabeth wed on November 20, 1947, and was by her side when she ascended to the Throne in 1952.
Prime Minister Justin Trudeau paid tribute to Philip and remembered the Duke's fondness for Canada.
"Prince Philip maintained a special relationship with the Canadian Armed Forces and over the years became Colonel‑in‑Chief of six Canadian units. In 2011, he was named honorary general of the Canadian Army and the Royal Canadian Air Force, as well as honorary admiral of the Royal Canadian Navy," said Trudeau. "He was also the patron of more than forty organizations in Canada, including the Canadian Aeronautics and Space Institute and the Outward Bound Trust. During his last visit to Canada in April 2013, the Duke was named the first-ever Extraordinary Companion of the Order of Canada by the Governor-General of Canada."
Ontario Premier Doug Ford has sent his condolences to the Queen and the royal family, and has ordered flags at government buildings across Ontario to be lowered to half-staff.
"Prince Philip was a devoted husband of more than 73 years, father, grandfather, war hero, and public servant. He leaves behind an exemplary legacy of outstanding service to society that reaches around the globe," said Ford. "Prince Philip will be missed by many people across Ontario and around the world. During a global pandemic, we cannot gather to pay tribute to his life, but we will always remember the extraordinary impact he had in his nearly 100 years on this earth."
The BBC reported Friday afternoon that Philip has requested no state funeral or lying-in-state. However, a ceremonial funeral will be held for him at St. George's Chapel in Windsor and his coffin will "lie at rest". Due to COVID-19, the public has been asked not to attend.
Additional details have not been finalized by Buckingham Palace.