According to police, the off-duty officer was in his personal vehicle at a stop light, when he saw a driver strike a pedestrian and a utility pole.
The officer, who was still in uniform, exited his car to arrest the offender.
That's when the offender accelerated his vehicle backwards in an attempt to escape the arrest. He struck the officer's vehicle, and then accelerated forward towards the officer.
The officer discharged his weapon, striking the offender, who was taken into custody and transported to a hospital. He is expected to be OK.
The pedestrian and a person in the officer's car were injured. They are also expected to be OK.
The officer was unhurt.