NEW YORK (March 2, 2013)—A former inmate of the massive Rikers Island Jail in New York City is accused of sneaking back in.

Yonkers resident Matthew Matagrano was charged with impersonating a Department of Correction investigator.

For at least a week, Matagrano, 36, used a badge and ID card to get into Rikers and roam the jail, authorities said.

Matagrano has a lengthy criminal history that includes a conviction for sodomy and sexual abuse that landed him on the state's sex offender registry.

It's not clear why he wanted to get into the jail, but he has also been caught posing as a Board of Education worker to enter schools.