According to TMZ, Sinead O'Connor has gone missing in the Chicago suburbs.
The Irish singer was last seen on a bike ride in Wilmette, Illinois, on Sunday afternoon, wearing a "black parka, black leather pants and a sweatshirt with 'Ireland' on the back."
Police have reportedly classified her as "missing suicidal." O'Connor revealed in 2012 that she had been living with bipolar disorder and received treatment in Ireland after postingpossible suicide notes on her Facebook page last year.
NEWPORT, UNITED KINGDOM - SEPTEMBER 06: Sinead O'Connor performs on stage during Day 2 of Bestival 2013 at Robin Hill Country Park on September 6, 2013 in Newport, Isle of Wight. (Photo by C Brandon/Redferns via Getty Images)
BERLIN, GERMANY - APRIL 19: Irish singer Sinead O'Connor performs live during a concert at the Astra on April 19, 2012 in Berlin, Germany. (Photo by Jakubaszek/Redferns via Getty Images)
NEW YORK, NY - DECEMBER 13: Singer Sinead O'Connor attends the Giorgio Armani & The Cinema Society screening of 'Albert Nobbs' at the Museum of Modern Art on December 13, 2011 in New York City. (Photo by Charles Eshelman/FilmMagic)
LONDON - NOVEMBER 27: Sinead O'Connor performs during Mencap's Little Noise Sessions at St John-At-Hackney on November 27, 2011 in London, United Kingdom. (Photo by Samir Hussein/Getty Images)