NEW YORK (CBSNewYork) – Police arrested a sex offender for allegedly taking pictures of a 9-year-old girl in his hallway last week, and now they are searching for other children David Zimmer may have come in contact with.

Police say Zimmer, 40, was picked up at around 9:15 p.m. after allegedly snapping shots of the girl in the hallway of Borough Park building. He faces Endangering the Welfare of a Child and Harassment charges.

Sources tell CBS 2 Zimmer is a Level 2 sex offender. He was arrested in 1998 for rape and took a plea down to sexual assault.

Police want anyone who knows of children that have come into contact with Zimmer are asked to call Crime Stoppers at 1-800-577-TIPS (8477). All calls are kept confidential. You can also submit your tip via their website, or by texting a tip to 274637 (CRIMES) and then entering TIP577.

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