Chicago Prison Break Update: Search now nationwide for escaped bank robber Kenneth Conley

This undated photo provided by the FBI shows , Kenneth Conley one of two inmates who escaped from the Metropolitan Correctional Center in downtown Chicago Tuesday, Dec. 18, 2012. Chicago Police Sgt. Michael Lazarro says their disappearance was discovered at about 8:45 Tuesday morning. Lazarro says the pair used a rope or bed sheets to climb from the building. (AP Photo/FBI,HONS
Kenneth Conley

(CBS/AP) CHICAGO - The search for convicted bank robber Kenneth Conley who escaped from a high-rise prison in downtown Chicago has broadened to a nationwide manhunt, the FBI said Monday.

Pictures: Inmates escape Chicago prison

FBI Special Agent Joan Hyde told CBS Chicago that the agency has no recent reports of Kenneth Conley sightings. Conley escaped on Dec. 18 with Joseph Banks, who was captured two days later. The men made a daring escape, apparently scaling down about 20 stories using a makeshift rope tied to the bars in a cell window.

Hyde said Conley may have traveled outside the Chicago area and has "been known to travel in the past." The FBI is circulating a poster of Conley with a devil tattoo on his upper right arm. Hyde said the tattoo "would be very hard to remove or disguise."

Complete coverage of the Chicago Prison Break on Crimesider