London, UK - Queen Elizabeth II died from old age, her official death certificate has revealed.

The document released by National Records of Scotland noted the time of the Queen’s death on Thursday, September 8, at 3:10 PM.

When paying tribute to her mother the Queen, Anne, the Princess Royal, revealed she was with the head of state in her last moments.

Anne, who accompanied her mother’s coffin as it traveled from Balmoral to London, via Edinburgh, said: "I was fortunate to share the last 24 hours of my dearest mother’s life."

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The princess is named as the "informant" on the document and would have notified the local registrar of her mother’s death.

The Queen was laid to rest on September 19, following 70 years of service, after family, friends, and many British people said a fond farewell to the late monarch.

Her grieving family walked behind her coffin throughout the long day of her funeral and burial.

The emotion was clear to see on the face of King Charles III, who traveled to Scotland soon afterwards, where he has remained with his Queen Consort.