Maryland Police: Officer Killed by Friendly Fire in Ambush

Left: Prince George's County Police Department officer Jacai Colson. (Prince George's County Police Department via AP); Right: Police stand outside a Popeyes restaurant during an investigation into the shooting of a Prince George's County police officer outside a police station, on Sunday, March 13, 2016, in Hyattsville, Md. AP Photo/Evan Vucci

Police stand outside a Popeyes restaurant during an investigation into the murder of Jacai Colson, a four-year veteran of the Prince George's County police force, who was shot outside the District III police station, on Sunday, March 13, 2016, in Hyattsville, Md. AP Photo/Evan Vucci