DAVIS, Calif. (AP) - Northern California authorities say a gunman has shot and critically wounded a police officer in Davis, California and the hunt is on for the attacker.

KCRA-TV reports that the officer was shot at about 7 p.m. Thursday while investigating a three-car crash in the downtown area of Davis.

The suspect is believed to be on foot. He's described as a white man in his 20s wearing a baseball cap, a black jacket and black tactical boots.

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