Subscribe | UPI Odd Newsletter Subscribe CHICAGO, Dec. 30 (UPI) -- Authorities said they have arrested a man after he allegedly robbed a Chicago bank and left behind a threatening note written on the back of his own pay stub. Federal investigators allege Thomas Infante, 40, entered the Fifth Third Bank branch shortly before 6 p.m. Friday and handed a female teller a note threatening to open fire if she did not give him cash, the Chicago Sun-Times reported Tuesday. Advertisement The robber fled with $400 but without the note, which investigators said was written on the back of a pay stub that bore Infante's name and address. Infante, who investigators said admitted to robbing the bank, was being held without bond at the Metropolitan Correctional Center in Chicago.