Policeman Oscar Theodore Peterson
Poplar Police Department

Officer Peterson was shot and killed while attempting to arrest a man for driving on a revoked license. Officer Peterson, with another Poplar officer and a Sioux tribal police officer, observed the man driving the vehicle and attempted to stop him.
The driver led the officers on a pursuit until the officers shot out one of his tires, causing the vehicle to overturn. The suspect exited the vehicle and opened fire on the officers with a .30-.30 rifle, killing Officer Peterson. The man then committed suicide.
- End of Watch:
- November 18, 1950