A Clearlake police officer was being treated Sunday for a fractured spine and other serious injuries after he was pinned between two trucks, authorities said.

The unidentified officer and his partner had pulled over a 2007 Chevrolet Tahoe on Lakeshore Drive near Redbud Park for a minor traffic violation at 4:30 a.m. when a passenger got out of the truck and started running.

As one officer gave chase, the driver of the Tahoe put the truck in reverse, pinning the other officer between it and a parked Ford F-250 pickup, Sgt. Tim Hobbs said. The Tahoe driver then sped off.

The injured officer was flown to Santa Rosa Memorial Hospital, where he was being treated Sunday for numerous fractured ribs, a fractured spine and major head and neck lacerations.

Clearlake police later arrested Daniel York, 53, at a residence in the 4700 block of West 40th Avenue. York, who is believed to be the driver of the Tahoe, is on parole and had a warrant for his arrest.

York was taken to St. Helena Hospital in Clearlake after he was bitten by a police dog.