Video shows the suspect walking on the first floor rooftop of a building on Clarkson and Rogers Avenues in Prospect Lefferts Gardens. The rooftop wraps all the way around the building.
Police say he reached into the woman's open window at about 4:40 a.m. May 12 and groped the 21-year-old while she was sleeping.
He then told her he was a police officer and asked if he could get into her bed, police said.
The suspect ran off after the woman screamed.
There were no reported injuries.
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