A dash camera video from the Uber shows Boek, 34, jumping out of a pick-up truck and quickly walking to Uber driver Robert Westlake's Hyundai Elantra. Holding what authorities said was a cell phone, Boek raised his hand and said: "You know I got a pistol? Westlake, 38, is a licensed armed security guard who holds a concealed weapons permit and who had just completed training to be a police officer. He fired once, killing Boek early Tuesday, the Polk County Sheriff's Office said. The sheriff's office says Westlake is cooperating with the investigation.

Source: CNN August 30, 2018 04:16 UTC