From what I've read, it's slightly different. The robbers were armed and stormed the jewelry store and the owner pulled an alarm and also pulled a gun. There was some gunfire in the store (no idea who shot at who) and the robbers took a UPS driver hostage and fled. They police chased the truck for several miles before it got stuck in traffic and then they shot 4 people. Again, exactly who shot who is unclear but it looks really bad for the police. I read an interview with the fa of the UPS driver btw, he said his son was recently assigned to the route, but it didnt sound like he was new.