RIVERTON, Wyo. (AP) — Officials say the Riverton Police Department officer who fatally shot a 58-year-old man who attacked the officer with a knife has been placed on paid leave while the incident is investigated.

The Ranger reports that Anderson Antelope, of Riverton, died in the confrontation on Sept. 21 outside the Walmart store in Riverton.

The officer involved was not injured. He has not been identified.

The officer had been called to Walmart in response to a report of intoxication.

Witnesses at the scene said the officer approached Antelope and asked Antelope to leave the area. Antelope refused, witnesses said, and when the officer appeared to try to move the man, Antelope attacked with the knife.