Sinéad O’Connor died of chronic obstructive pulmonary disease (COPD) and bronchial asthma, her death certificate confirmed.
The news was first reported on Sunday. by the Irish Independenta year after the Irish artist and activist died at the age of 56.
O’Connor’s first husband and close friend, John Reynolds, filed the death certificate in London last Wednesday.
The document states that O’Connor died of “an exacerbation of chronic obstructive pulmonary disease and bronchial asthma as well as a mild lower respiratory tract infection.”
O’Connor died on July 26 at her south London home, where police found her “unconscious”. At the time, she said she did not consider her death suspicious.
In January, a coroner determined she died of natural causes.
Over the course of her three-decade career, O’Connor achieved global success with her cover of Prince’s “Nothing Compares 2 U” in 1990 – a song that thrust her into the spotlight, sometimes against her will.
In the public eye, she became known as a committed activist – notably for tearing down a photo of Pope John Paul II during a Saturday Night Live concert in 1992.
His death prompted an outpouring of tributes from friends, peers, collaborators and public figures.
The then Irish Taoiseach, Leo Varadkar, said: “His music was loved around the world and his talent was unmatched and incomparable.”
O’Connor’s death came 18 months after his 17-year-old son Shane died after disappearing. She is survived by her three living children.