Former Alaska state trooper Daniel Scott was sentenced Monday to four years in prison for sexually assaulting three Aniak women, people he was sworn to protect as a law enforcement officer.

He will actually serve less. With the standard one-third off for good behavior and credit for time served, Scott will be released in less than three years under the plea deal, prosecutor Teresa Foster said after Monday's court hearing in Anchorage.

He must register as a sex offender for 15 years after completing his sentence but will not have to serve any probation.