A crash on state Route 7 in Spanaway left two injured Saturday and blocked a lane of the highway for three hours, the State Patrol said.
A 30-year-old Tacoma man on state Route 7 crossed two lanes of traffic and a center turn lane, then crashed head-on with a 59-year-old Spanaway woman headed south, State Patrol spokesman Guy Gill said.
Troopers believe drugs or alcohol were involved, and said the Tacoma driver was arrested on suspicion of driving under the influence and vehicular assault.
Both drivers were taken to local hospitals for injuries that were not life-threatening, and two passengers of the 30-year-old fled after the crash, which happened about 10:15 p.m. at Field Road East, troopers said.
The Tacoma man was driving a 2003 GMC Jimmy, and the woman was driving a 2010 Nissan Sentra.
Gill said the woman had a possible fracture in her back, as well as knee and ankle injuries, but that the Tacoma driver did not have significant wounds.
Troopers' only concern about finding the passengers who fled on foot was whether or not they were injured, Gill said. Investigators would contact them at a later time if need be, he said.
The News Tribune does not generally name suspects before they have been charged with a crime.