The official cause of Prince Philip's death has been listed as "old age", The Telegraph reports citing the death certificate, which suggests the Duke of Edinburgh did not have any identifiable disease or injury that contributed to his death.

Axar.az reports citing The Telegraph Prince Philip, Queen Elizabeth II's husband and the longest-serving consort of any British monarch died on 9 April at Windsor Castle at the age of 99. Buckingham Palace said he passed away "peacefully" but did not provide any other specific details on his death.

The Telegraph reported on Tuesday that Prince Philip's death was certified by Sir Huw Thomas, the head of the royal medical household who declared the cause simply as "old age". The death certificate suggests that nothing else contributed to the death, including the heart surgery that the Duke of Edinburgh received weeks before he died.