Queen Elizabeth II's official cause of death released

Queen Elizabeth II died from old age, according to the monarch's death certificate

Queen Elizabeth II's official cause of death was released Thursday.

The 96-year-old monarch died of old age.

The certificate, published by National Records of Scotland, records that Elizabeth died at Balmoral Castle in Ballater, Scotland, on Sept. 8 at 3.10 p.m. The document was signed by the queen’s daughter, Princess Anne. 

The queen's tomb is located inside the King George VI Memorial Chapel, part of St. George’s Chapel at Windsor Castle.

Queen Elizabeth II's official cause of death was listed as old age.

Queen Elizabeth II's official cause of death was listed as old age. (Tim Graham Picture Library/Getty Images)

QUEEN ELIZABETH II'S FINAL RESTING PLACE REVEALED IN NEW WINDSOR CASTLE PHOTOGRAPH

St. George's Chapel reopened to the public Thursday, and hundreds of people lined up outside Windsor to pay their respects to Queen Elizabeth 10 days after she was laid to rest in the tomb.

The tomb is marked by a slab of hand-carved Belgian black marble. The queen’s name is inscribed on the ledger stone in brass letter inlays, alongside the names of her husband, mother and father.

To visit the chapel, royal fans must buy a ticket to Windsor Castle. The price for adults is 26.50 pounds ($28.75) Sunday through Friday, and 28.50 on Saturdays.

Among the early arrivals was Anne Daley, 65, from Cardiff, who got to the castle at 7:30 a.m., well ahead of the 10 a.m. opening time. She was also one of the first in line as tens of thousands of people shuffled through Westminster Hall over four days to see the queen’s lying in state before her funeral.

Queen Elizabeth II died Sept. 8 at Balmoral Castle in Scotland.

Queen Elizabeth II died Sept. 8 at Balmoral Castle in Scotland. (Getty Images)

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"The castle feels like empty, gloomy. Nobody’s living in it. You know, you’ve lost the queen, you’ve lost the duke, you lost the corgis," Daley said. "It’s like when you’ve sold your house and all the history is gone."

Queen Elizabeth II's state funeral took place Sept. 19. King Charles III, Prince Andrew, Prince Edward, Princess Anne, Prince William and Prince Harry, among other royal family members, all attended the multitude of remembrance events throughout the royal mourning period.

When she died, Queen Elizabeth was the most widely traveled British head of state and the longest-married British monarch. She had ruled for longer than any other monarch in British history, becoming a much-loved and respected figure during her decades-long reign. She reached the milestone of 70 years on the throne on Feb. 6, 2022, celebrating with the Platinum Jubilee in June to mark the occasion.

Duncan Larcombe, royal author and Fox News royal contributor, previously noted that the U.K.'s love for Her Majesty is notably one of her "biggest achievements."

"There is something quite majestic and almost mystical about the fact that the British royal family not only still exists, but they appear to still be incredibly loved and incredibly relevant to British society," he told Fox News Digital. "And no one could have really predicted that. I mean, that's possibly one of the biggest achievements for Queen Elizabeth at this stage."

The coffin of Queen Elizabeth II is carried by pallbearers from the Queen's Company, 1st Battalion Grenadier Guards during the Committal Service for Queen Elizabeth II at St George's Chapel, Windsor Castle on Sept. 19, 2022, in Windsor, England.

The coffin of Queen Elizabeth II is carried by pallbearers from the Queen's Company, 1st Battalion Grenadier Guards during the Committal Service for Queen Elizabeth II at St George's Chapel, Windsor Castle on Sept. 19, 2022, in Windsor, England. (Jonathan Brady - WPA Pool/Getty Images)

Prince Harry and Meghan Markle sit behind King Charles III and Queen Consort Camilla at the Queen's funeral on Sept. 19, 2022.

Prince Harry and Meghan Markle sit behind King Charles III and Queen Consort Camilla at the Queen's funeral on Sept. 19, 2022. (Dominic Lipinski via Getty Images)

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Fox News Digital's Stephanie Nolasco and The Associated Press contributed to this report.