Vorhees police officer Jeffery Tyther, 44, allegedly tapped into a state police computer system to learn the woman's identity and then sent her repeated messages via Facebook.
Tyther was charged with second-degree computer theft and a fourth-degree charge of violating the Motor Vehicle Record Law. The 14-year veteran was released on a summons after turning himself in Monday, the Philadelphia Daily News said.
According to prosecutors, Tyther was apparently smitten by a young woman who passed him on a highway while he was on patrol. He pulled up alongside her car and waved to her.
He then allegedly used the state computer system to run her license number and sent her e-mails and a Facebook "friend" request. The woman ignored the digital overtures but told a co-worker who reported it to police.