Sinéad O’Connor died of natural cases, the coroner in London has said.

The “Nothing Compares 2 U” singer died last summer at the age of 56, and the following day London’s Metropolitan Police said the death was not being treated as “suspicious.”

Six months on, Southwark Coroner’s Court has said in a statement that the singer died of natural causes. “The coroner has therefore ceased their involvement in her death,” the statement added.

The singer had recently moved back to London, tweeting earlier that month that she had been away for more than two decades.

There was an outpouring of grief at the death of the popular Irish artist, who shot to fame after her second album and appeared on multiple U.S. shows and ‘best of’ albums. O’Connor also courted controversy throughout her career. As the musical guest on Saturday Night Live in 1992 — her second appearance on the NBC late-night stalwart — she sang a cover of Bob Marley’s “War” that shifted its lyrical focus to child abuse by the Catholic Church. When the song ended, O’Connor produced a photo of the popular Pope John Paul II and ripped it in half, and she was subsequently banned by SNL.

The coroner’s verdict came a few hours after a March 20 Carnegie Hall tribute concert for O’Connor and The Pogues frontman Shane MacGowan was announced.

The one-night show called Sinéad & Shane at Carnegie Hall is positioned as a celebration of both their lives, the announcement coming a few weeks after O’Connor’s fellow Irishman MacGowan passed away at 65.

Artists such as Mountain Goats, Cat Power, and Dropkick Murphys are set to cover a number of O’Connor and MacGowan’s songs.