The man accused of killing a Houston sheriff's deputy in August targeted Darren Goforth because he was a law enforcement officer, according to an indictment filed Monday.
A Harris County grand jury accused Shannon Miles, 31, of "retaliation" against the 47-year-old uniformed deputy "on account" of his "service and status as a public servant," the court documents said.
Miles, who is being held without bail, was indicted for capital murder.
Goforth was killed on Aug. 28 at a Houston Chevron station during what authorities have described as an "execution-style" ambush.
During a news conference Monday, Harris County prosecutor Devon Anderson offered more detail, describing a brutal scene captured on a gas station surveillance camera.
As Goforth walked to his car, a man who authorities believe is Miles got out of a red pick-up truck and ran up to the deputy.
He "puts the gun to the back of his head and shoots," Anderson said, according to NBC affiliate KPRC.
"Deputy Goforth hits the ground and then he continues to unload his gun, shooting repeatedly into the back of Deputy Goforth."
Goforth's killing set off a debate over the Black Lives Matter movement and the repeated claims that police use excessive force against minorities. The day after Goforth's killing, Harris County Sheriff Ron Hickman warned that the "dangerous rhetoric" against police officers was "out of control."
"We've heard 'black lives matter,'" Hickman told reporters at the time. "Well, cops' lives matter, too."