A police officer has been shot in the head and a motorist is dead after a traffic stop in Lehi, about 30 miles south of Salt Lake City.

Lehi police say the officer was shot Monday by a woman driving a Honda Accord. She was killed after other officers fired at her.

No names were released. Sgt. Darren Paul says the woman's car has a Washington state license plate.

The officer is in critical condition at Utah Valley Regional Medical Center in Provo.

The woman driving the Accord was stopped after a gas station called police about an impaired driver.

Lehi is in Utah County.