A man armed with a box cutter grabbed a woman from behind as she waited for a cab on a Brooklyn street and dragged her to a rooftop, where he sexually assaulted her, police said.
The 19-year-old woman told police that she did not live in the building on Bergen Street in Crown Heights and was waiting outside at about 2 a.m. Monday.
The victim was taken to Kings County Hospital. Police were canvassing the scene after the attack.
A source told NBC 4 New York that it's believed the suspect fled in a cab. Detectives were checking with local cab companies for possible video or photos of the man.
No arrests have been made.
Anyone with information is asked to call police.
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