Transcript of New York attorney general investigates police shooting in Utica

Next tonight, the New York State Attorney General is launching an investigation into the fatal police shooting of a 13-year-old boy in Utica. Body camera video of the incident was just released overnight. This weekend, hundreds attended a vigil for the eighth Creator. Officials say they believe the boy had a handgun, but they said it turned out to be a Bibi gun that closely resembled a real gun. Details tonight from ABC's Morgan Norwood. We warn you the video is disturbing.

Tonight, for the first time, we're seeing police body camera footage of the moment an officer in upstate New York shoots and kills 13-year-old Nin We. In the video, you see Utica police stopping the eighth grader and another teen who they said matched the description of robbery suspects. Can I just patch it down to make sure you got no weapons on you. As an officer moves in, Nin runs today. The team appearing to point at officers what authorities say they believed was a gun, circled in red, and edited freeze frames released by the Utica Police Department. Police catch up, pulling Nian to the ground. Drop it. Drop it. An officer identified tonight as 6-year veteran Patrick Huzny, shooting him once in the chest during what the police chief described as a struggle. That's just one shot. It was me. Tonight, authorities also releasing This photo of what they say turned out to be a pellet gun, a replica of a Glock 17 Gen 5 with a detachable magazine. Not an actual gun. Wei's mother sobbing at the press conference Saturday.

I don't think any officer goes who's on the job hoping to shoot or intentionally try to shoot anybody. They're looking to be able to come home at the end of their shift like anybody else. Say his name.

No way. Overnight, hundreds gathering to remember Nyein, a refugee born in Myanmar and a member of the Karen ethnic minority.

He shouldn't be here crying and moor for his little brother. This country is supposed to be a country of freedom, a country of peace. What's going on?

Rachel, police say this wasn't a random stop. Instead, part of a police investigation, the chief saying they've arrested teens for carrying replica guns before and calling it a disturbing trend. Rachel?

Morgan, thank you.