Nationwide Manhunt for Escaped Inmate A nationwide manhunt is underway for a career criminal who has twice escaped from jail by switching identities with other inmates. Authorities did not notice Rocky Marquez, 34, was missing from a Detroit jail until five days after he walked out the front door undetected. "Mr. Marquez does have a bit of a head start, but we have the best of the best working on this case and I'm confident Rocky will be put behind bars," said Deputy U.S. Marshal Frederick J. Freeman. According to police, on Jan. 20, Marquez switched ID wristbands with another inmate, who was about to be freed on bond. He's smarter than your average criminal. He's somehow getting inmates to cooperate with him to use their identities to walk out of jail," Freeman said. According to U.S. Marshal David Gonzalez, Marquez pulled the same stunt in a Phoenix prison eight months ago when he switched wristbands with another inmate who he had befriended and who had a similar complexion and build. Officials from the Wayne County Sheriff's Office said there would be an investigation into the reasons for Marquez's escape. "We have policies and procedures in place that should have prevented something like this from happening," the sheriff's office told ABC News. ABC News' Mark Greenblatt contributed to this report.