CHICAGO (Reuters) - Police in the Chicago suburb of Wilmette said on Monday they are "seeking to check the well-being" of Irish singer Sinead O'Connor, who they said has been missing since early Sunday.
Police declined to confirm that they were looking for O'Connor or searching for her whereabouts.
O'Connor, 49, reportedly left the Wilmette area for a bicycle ride at 6 a.m. local time on Sunday and has not returned, the police said in a statement. A caller expressed concern for her well-being. Police said they did not know O'Connor's connection to Wilmette.
Representatives for O'Connor could not immediately be reached for comment.
Last November, the singer received medical treatment after a message about her taking a drug overdose was posted on her Facebook page.
Earlier this month, comedian Arsenio Hall filed a $5 million defamation lawsuit against O'Connor, who accused him of supplying drugs to rock star Prince, whose death on April 21 has prompted speculation about an overdose.
O'Connor, whose biggest hit was her 1990 version of the Prince song "Nothing Compares 2 U," posted a note on her Facebook page claiming Hall supplied drugs to Prince for years.
(Reporting by Suzannah Gonzales, Fiona Ortiz and Justin Madden in Chicago; Editing by Matthew Lewis)