A 36-year-old man hanged himself last week in an 18th Police District jail cell, according to police and the Medical Examiner's Office.
Brian Irvin used his sweatshirt and one of the bars in the cell to take his own life, police said.
A bench warrant had been issued for Irvin after he failed to appear in court for a status hearing Feb. 1 in a case involving the alleged unauthorized transfer of sounds on recording devices, according to online court records.