The video, released by the department, shows both drivers pulling over and exiting their vehicles. As they were assessing the accident, the driver of the other vehicle approached the off-duty officer and produced a firearm.
That other motorist then struck the off-duty officer in the face with a firearm. The video shows the other man then pointing his weapon at the officer, who then drew his department-issued firearm and fired.
The two individuals exchanged gunfire, and the subject was struck.
The subject, a 26-year-old male, was pronounced deceased at the scene. No one else was struck by gunfire. The officer was taken to the hospital for treatment of injuries sustained during this incident.
The officer who discharged his duty weapon during this incident is a 40-year-old male with more than 21 years of service. He was placed on administrative duty as is routine in officer-involved shooting investigations.
The Milwaukee Area Investigative Team is investigating this incident. The West Allis Police Department is the leading agency.