An Auburn woman who was suspected of drunken driving ran her vehicle into a Washington State Patrol car early Saturday morning while the trooper was in the process of arresting another DUI suspect.

The accident reportedly occurred around 3:30 a.m. on Highway 167, just south of 37th Street Northwest. The trooper had put the 36-year-old Auburn woman in the back seat of his patrol car, and was in the front seat waiting for a tow truck for her Ford Focus.

A second driver, a 24-year-old Auburn woman, then crashed her 1990 BMW into the back of the trooper’s car, while it was sitting on the right shoulder with its lights flashing.

Authorities say the trooper sustained minor injuries and was taken to Auburn Regional Hospital.

Both women have been booked into King County jail on suspicion of driving under the influence