Two officers were shot by the gunmen - a man and a woman - who were wearing bulletproof vests. One of the officers died at the scene, while the second subsequently died in surgery.
The attackers then ran across the parking lot to a nearby Walmart store, and the Review-Journal said they exchanged gunfire with and ultimately killed a civilian who was carrying a concealed weapon.
The civilian, who has not yet been identified, was found dead inside the front door. NEWS SOURCE