BOSTON, MASS - A veteran Massachusetts state trooper has been found guilty of three counts of raping a woman while on duty last year.

Daniel Grant, 42, of Holbrook, a married 17-year veteran of the state police had been accused of threatening to plant drugs on a 26-year-old woman unless she complied with his demands for sex in an incident which occurred Jan. 20, 2006.

Prosecutors said that while on duty, Grant approached a car which was parked behind a hotel and occupied by a 26-year-old woman and a man. After running a computer check on the car's license plate, he determined that there was an outstanding warrant for the man's arrest.

Prosecutors said that Grant allegedly offered the man money and told him to leave. He then told the woman that he had done her a favor because the man was "bad" and suggested that she should repay him with sexual favors. He allegedly showed her cocaine and said that if she didn't do what he wanted, she would be arrested for drug possession and would be sent to prison. Prosecutors said he then allegedly took her to a nearby building where be sexually assaulted her.