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PHILADELPHIA (CBS) — The search is on for a predator accused of groping school girls in Center City and North Philadelphia. The most recent incident was captured on camera at Broad and Fairmount Tuesday evening.

Police say he grabbed a 16-year-old around 8:30 p.m.

Four similar incidents were reported earlier in the day over a two-hour period.

Investigators believe the man is homeless.

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They are asking young people to be vigilant.

“Based off the video that we recovered and the descriptions, we believe that the offender is a black male, in his 50s, he’s light complected, walks with a limp, may have what they described as a lazy eye,” Philadelphia Police Capt. Mark Burgmann said.

“He’s wearing a green or olive-color three-quarter-length hooded jacket, a gray hooded sweatshirt, he has dark pants and dark shoes on,” Burgmann said.

Anyone with information is asked to call police.