Betty White, who passed away on New Year’s Eve at the age of 99, suffered a cerebrovascular accident, the medical term for a stroke.

This was revealed by TMZ, who obtained her death certificate on Monday.

The certificate said that White suffered the stroke six days before her death.

According to the National Library of Medicine, the incident happens when a part of the brain experiences a loss of blood flow.

White’s friend and agent Jeff Fitjas previously told E! News that the actress “died peacefully in her sleep” and rubbished rumours that she died as a result of receiving the COVID-19 vaccine.

“People are saying her death was related to getting a booster shot three days earlier but that is not true. She died of natural causes,” Witjas said. “Her death should not be politicized—that is not the life she lived,” he added.

In 2012, White said she had “no fear or dread of death” in a TimesTalk conversation with New York columnist Frank Bruni.

White also credited her mother’s approach for impacting her stance on death, adding that she was “happy as a lark to stay around as long as I can”.

Meanwhile, Witjas told People Magazine that White was cognisant of the love her fans had for her during her final days as he would often remind her of it.

“Even when she wasn’t working, I said, ‘Betty, millions of people out there are still asking for you. You’re getting your fan letters, I’m getting offers for you,'” he said. “I don’t know if she ever embraced it, or really felt it,” Witjas added.

“I would always reinforce it with her because I always felt she should know that,” he continued. “I never wanted her to think while she was sitting at home, that the world has passed her by. It never did,” he shared.