Queen Elizabeth II died of old age, her death certificate has revealed, APA reports citing BBC.
It says she died at 15:10 BST in Balmoral Castle in Scotland on 8 September.
The National Records of Scotland published the certificate on Thursday.
The document was signed by her daughter, Princess Anne.
The Queen's death was registered in Aberdeenshire on 16 September by the Registrar General for Scotland, Paul Lowe.