SEATTLE — Police arrested a man Tuesday on suspicion of seriously injuring a police officer and wounding a second with his vehicle.

The injured trooper, who has not been identified, and the woman who was struck are from the Tacoma area, a Seattle police spokeswoman said. The trooper was getting dressed after work when she was hit by the man’s vehicle in the city’s northbound lanes of Washington Avenue South, said Sgt. Cindi West.

The trooper suffered wounds that required surgery and faces charges of assault, reckless driving and several traffic violations, West said.

Police called in a bomb squad in a search for the suspect, who remains in custody, and are investigating the crash.

The 30-year-old suspect, who has not been identified, allegedly hit the trooper with his vehicle about 10:30 a.m. Tuesday in the southwest corner of the state, West said. The woman who was struck, who had her bike stolen, was also hit.

The suspect, who was driving a newer-model SUV, tried to stop the trooper’s cruiser on Washington Avenue South, authorities said. Instead, he “intentionally, recklessly and recklessly struck two patrol vehicles to become involved in a physical confrontation,” and then ran over a guardrail and a curb, West said.

Police believe the man was under the influence of a drug and stopped after a brief pursuit, West said.

“It’s that kind of stuff that we believe it was not a drug-related incident,” she said.

The injured trooper was taken to a hospital and is in critical condition, West said. The woman who was struck has been treated and released.

No names have been released of the victims.