A Lynbrook man was arrested in Valley Stream on Friday after he exposed himself and performed a sex act in front of the same 16-year-old girl two days in a row as she walked to school, Nassau police said.

The teen was walking past David K. Aronov's white Nissan Maxima, parked on Fletcher Avenue in front of Valley Stream Central High School, when he acted out in a lewd manner on both Thursday and Friday mornings about 8:20 a.m., police said.

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But on Friday as the girl continued past Aronov, who police said exposed himself from the driver's seat of his car, she snapped a picture of his license plate and later told school officials what happened.

Aronov, 21, of Atlantic Avenue, was found by police about an hour later in his car a few blocks from the scene and was arrested without incident, police said.

He was charged with two counts of public lewdness and will be arraigned Saturday at First District Court in Hempstead.