Transcript for Protests Erupt After Officer Not Charged in Fatal Shooting
But now to Charlotte, north Carolina, where protests erupted overnight after prosecutors said they would not charge the officer who fatally shot Keith Lamont Scott in September. ABC's Eva pilgrim has the latest. Reporter: Overnight people taking to the streets. Four arrested protesting over a fatal police shooting. This morning no charges for the police officer who fired the fatal shots killing a Charlotte man. I am fully satisfied and entirely convinced that officer Brentley Vinson use of deadly force was lawful. Reporter: Into Keith Lamont Scott's death while evidence points to the 42-year-old being armed. Something Scott's family had disputed. His wife saying as much on the tape from the shooting. Drop the gun. He doesn't have a gun. Reporter: The D.A. Also presenting evidence police did see a gun prior to approaching Scott radioing in before the shooting. There was a guy that was parked next to us that was rolling a joint had a gun. Reporter: As well as releasing this from a 7-eleven showing Mr. Scott with a bulge around his right ankle and previously released police video you can see his pant leg pulled up. Empty holster revealed. The D.A. Concluding he failed to comply with commands to drop his gun. Justifying the shooting. Scott's family disagreeing asking why a father waiting to pick up his kid ended up dead. But that does not mean that this officer's killing of Keith Scott was right. All that means is that under the view of the d.a.'s office it wasn't criminal. Reporter: And the D.A. Saying that police found a gun at the scene that they have since identified as Scott's. His family saying in none of that video do you clearly see him holding a gun and they are profoundly disappointed with the d.a.'s decisions. They are considering pursuing a civil case. Robin. We'll see what happens, Eva, thank you.
This transcript has been automatically generated and may not be 100% accurate.