Matt Kenny shot Tony Robinson in an apartment house in March. Kenny said Robinson started punching him after he entered the building to investigate sounds of a disturbance. Witnesses said Robinson, who was high on mushrooms, had assaulted two people moments before the encounter.

Prosecutors cleared Kenny of any criminal wrongdoing in May. An internal investigation that concluded in early June found he violated no police policies.

A police spokesman says Kenny, who had been on paid leave, returned to work with the training and mounted patrol units on June 11. He says none of Kenny’s duties involve patrols.

Robinson’s family has filed a federal civil rights lawsuit against Kenny and the city.