Lone Gunman Laughed, Sang During Standoff: Sources

A North Texas Army veteran has been identified as the lone gunman responsible for the sniper attacks that killed five police officers and injured seven others in Dallas, authorities say.

Micah Xavier Johnson, of Mesquite, ambushed officers at a peaceful protest against nationwide police-involved shootings in Dallas on Thursday, police said.

The investigation into Johnson’s attack is still ongoing, and much remains is still unknown. But a picture is beginning to emerge of what went on inside the standoff — a source tells NBC Investigates that the 25-year-old was wounded by gunfire before being killed by a robot outfitted with a bomb — and how he prepared for the deadly assault . . .

Johnson was laughing and singing and not at all anxious during the standoff at the El Centro College building, a law enforcement source with knowledge of the incident told NBC 5 Investigates senior reporter Scott Friedman.

Johnson told police he had specifically been training for this event and working out in preparation for Thursday night. NBC 5 Investigates has also learned Johnson was wearing a military-style bulletproof vest. (Read more from “Lone Gunman Laughed, Sang During Standoff: Sources” HERE)

Follow Joe Miller on Twitter HERE and Facebook HERE.