A Chicago man was accused of impersonating a Cook County Sheriff's officer on a platform at the Clark and Lake "L" stop after a police officer saw him loitering on the platform as trains went by.

Joshua Perva, 19, of the 4800 block of West Diversey Avenue, was standing on a train platform about 3:45 p.m. Monday, watching trains go by without getting on any of them, county prosecutors said, when a K-9 unit officer approached him and questioned him. Perva allegedly flashed a gold star badge clipped to his pants and said he was a Cook County Sheriff's officer, a police report said.

When the officer asked Perva for identification, Perva allegedly told him he was not a sheriff, but worked for a security firm while getting paid under the table, and that he performed security duties for a nearby dollar store.

A search of Perva revealed a small police scanner, handcuff keys, two keys belonging to the CTA, and a security guard gold star badge with a case, the police report said.

Perva was brought to the Cook County Leighton Criminal Courthouse on Tuesday afternoon and ordered held in lieu of $100,000 bond.

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