Sinéad O'Connor's Official Cause of Death Revealed 1 Year Later: Report

The Grammy winner died in July 2023

Sinéad O'Connor's official cause of death has been revealed.

One year after her death in July 2023, the Irish Independent reported — citing the Grammy winner's death certificate — that she died from chronic obstructive pulmonary disease and asthma.

The certificate specifically said that O'Connor's death was a result of "exacerbation of chronic obstructive pulmonary disease and bronchial asthma together with low grade lower respiratory tract infection," the outlet said.

On Wednesday, July 24, the "Nothing Compares 2 U" singer's death was formally registered by her former husband John Reynolds in Lambeth, London, per the Irish Independent. Senior coroner for Inner South London Julian Morris certified her death following a post-mortem examination, according to the outlet.

The coroner's office did not immediately respond to PEOPLE's request for more information on Sunday, July 28.

Related: Sinéad O'Connor Documentary Available to Stream for Free for 1 Week in Honor of the Year Anniversary of Her Death

O'Connor was 56 years old when she was found "unresponsive" at a home in London on July 26, 2023.

At the time, the Coroner Court's website shared that "no medical cause of death was given." Shortly after her death, a Scotland Yard spokesperson told PEOPLE that her death was "not being treated as suspicious."

Then, the London Inner South Coroner's Court issued a statement revealing that she died of natural causes and that it had ceased involvement in her death.

The musician is survived by her three children. Her son, Shane, died by suicide in 2022 at age 17.

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories.

Related: Sinéad O'Connor's Daughter Roisin Waters Sings 'Nothing Compares 2 U' as Tribute to Late Mother in N.Y.C.

Earlier this week, the director of O'Connor's documentary, Nothing Compares, announced that the film would be available to stream for free through the following seven days on La Cinéma Club.

Filmmaker Kathryn Ferguson wrote on Instagram that "many people have reached out from around the globe, asking how they can view it" since its release in 2022.

"This includes many who lack access to streaming platforms or live in regions where the film isn't available," Ferguson wrote.

She added, "Now, everyone can watch it and honor Sinéad's extraordinary talent and her unwavering commitment to standing up for the oppressed."

For more People news, make sure to sign up for our newsletter!

Read the original article on People.