NEW YORK -- Most people who've done time in New York City jails can't wait to get away.
But on Friday, authorities accused one former inmate of sneaking back in.
Yonkers resident Matthew Matagrano is charged with impersonating a Department of Correction investigator.
Officials say that for at least a week, Matagrano used phony credentials to get into multiple city lockups, including Rikers Island and the Manhattan Detention Center, where he mingled with inmates for hours.
Matagrano has a rap sheet that includes a conviction for sexual abuse. He's on the state's sex offender registry.
It's not clear why he wanted to get into jails, but he had also previously been caught posing as a Board of Education worker to enter schools.
His court-appointed lawyer couldn't immediately be reached by phone.