oh, look. Another one:
Shopper fires gun at alleged shoplifters in Elkhart Big R parking lot, police say

Big R employees were chasing two suspects who were shoplifting, police say. A shopper joined the chase, yelling at the suspects to stop. When the suspects entered a vehicle, the shopper drew a handgun and fired one shot at them, police say.

The suspects accused of shoplifting got away, and a shell casing was found in the parking lot.

The person who shot the gun was brought to the Elkhart Police Department for questioning and then released, police say.