Two masked men shot a police officer in the head while he was responding to a robbery in Mississippi, authorities said.
The gunmen are on the run after the shooting in Clarksdale on Saturday night.
The wounded officer, who works for the Clarksdale Police Department, is out of surgery and in stable condition, Mayor Bill Luckett said.
The men were robbing the store when the officer, who was nearby, noticed suspicious activity there, according to the mayor. Two clerks fled through the back door.
The men stole money from a cash register and took off, Luckett said.
The officer caught up with the robbers four blocks from the store, where they shot him and left him bleeding on the street, the mayor said.
At least one of the assailants had a gun, he said.