A Las Vegas-area Walmart was evacuated Saturday after a man pulled a gun on a security officer, the Associated Press reported.
The man also dropped a backpack with, what appeared to be, an explosive device.
Store personnel recognized the man from a previous incident and then asked the man to go to an office with Metro police, the Las Vegas Sun reported.
The man refused and ran outside. He then pulled a gun and hit a store officer in the head with it. The gun went off once, firing into the air.
Police are searching for the suspect, who left behind a fake ID.
The store officer did not suffer any serious injuries.