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.
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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.