Police in a suburb of Chicago are searching for Irish singer Sinead O'Connor who has been reported missing for more than a day.
Wilmette Police "are seeking to check the well-being" of the 49-year-old, they said in a brief press release.
Police were called after O'Connor "left the Wilmette area" for a bicycle ride at 0600 local time on Sunday, and had not returned after more than a day.
No more information is currently available, police say.
O'Connor became a global star in 1990 with the worldwide hit Nothing Compares 2 U, a song written by Prince.
She has recorded 10 solo albums but has also made headlines with controversial outbursts throughout her career.
In 1992, she ripped apart a photo of Pope John Paul II during a live television broadcast and has been a strong critic of the Catholic Church over its handling of the child abuse scandal.
She said in 2012 that she had suffered a "very serious breakdown" when she cancelled a world tour.
And last week she was in the news again after alleging US comedian Arsenio Hall had supplied drugs to Prince, who died last month.
He strenuously denied the allegation and said he was suing the Dublin-born, mother-of four.
(UPDATE) Police in a Chicago suburb called off their search Monday for singer-songwriter Sinead O'Connor after she was found safe.
Officer Fred King of the Wilmette, Illinois, Police Department told CNN that O'Connor was located Monday after being missing for more than a day. An unnamed caller had alerted authorities that the singer had not returned from a bike ride early Sunday morning.
Police didn't offer any details about where O'Connor had been or how they located her.
"The Wilmette Police is seeking to check the well-being of Sinead O'Connor," said an earlier press release from the desk of Wilmette Police Sgt. Michael Robinson. "O'Connor reportedly left the Wilmette area for a bicycle ride yesterday at 6:00 AM and has not returned. A caller has expressed concern for her well-being and no other information is available at this time."
The Irish-born singer, who became a global star in 1990 with her Prince-penned hit, "Nothing Compares 2 U," has had her fair share of troubles in recent years.
Earlier this month former late-night host Arsenio Hall filed suit against her for $5 million, claiming defamation after she accused him of supplying Prince with drugs "over the decades" and of drugging her.
Arsenio Hall sues Sinead O'Connor over Prince drug claims
In November, O'Connor raised concerns that she might harm herself after she posted a distressed note on her Facebook page saying she had taken an overdose in a hotel room in Ireland. The singer was later found to be safe and was taken for medical treatment SOURCE