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.
See photos of the singer: