OLYMPIA, Wash. -

The Thurston County sheriff's office says a deputy shot a driver in the arm after the deputy's vehicle was rammed multiple times.

The Olympian reports that the deputy was called to help Nisqually Tribal Police, who had been pursuing an apparently intoxicated driver at about 3 a.m. Saturday.

Sheriff's Lt. Greg Elwin says that when the deputy tried to intercept the suspect, the suspect's sedan crashed into the deputy's marked sport-utility vehicle head-on. As the deputy got out, the suspect's car continued ramming the SUV. The deputy fired, hitting the 29-year-old suspect in the arm.

The suspect was being treated at a hospital and was expected to be booked into jail upon his release for investigation of assault.

Elwin would not confirm how many shots were fired by the deputy.

The officer-involved shooting is now being investigated by a regional team headed by Mason County Sheriff's Office.