Queen Elizabeth's death certificate confirms she died of 'old age' and that Princess Anne was by her side

• Queen Elizabeth II died of old age, her death certificate states.
• The Queen died on September 8 at the age of 96.

Queen Elizabeth II died of "old age," according to her death certificate.

The Queen died peacefully at Balmoral Castle in Scotland on September 8, Buckingham Palace announced at the time. She was 96.

The monarch's death was registered on September 16 in Aberdeenshire, Scotland, and her death certificate was published by the National Records of Scotland on Thursday. A screenshot of the certificate was shared on Twitter by ITV's royal editor, Chris Ship.

The certificate states that Her Majesty died at 3:10 p.m. BST and was signed by her daughter, Princess Anne.

Anne, who is officially known as The Princess Royal, previously said in a statement shared with Insider that she was with her mother for the last 24 hours of her life.

The princess said it was an "honour and a privilege" to accompany the Queen "on her final journeys," and that she was grateful for the support King Charles had received upon his accession to the throne.

On September 8 at 12:32 p.m. BST, Buckingham Palace said in a statement sent to Insider that doctors were concerned for the Queen's health and that she was under medical supervision.

While Anne was with the monarch before she died, it appears that some members of the royal family did not make it to Balmoral on time. Hello magazine previously reported that Prince William, Prince Edward and his wife Sophie, and Prince Andrew arrived at Aberdeen airport at 3:50 p.m. BST on September 8.

Her Majesty's death was announced later that day at 6:30 p.m. BST.

Buckingham Palace and Clarence House did not immediately respond to Insider's request for comment.