A Texas police department released a body camera Wednesday video, showing one of his officers gently reminding children to fasten their seatbelts moments before running after, and then killing, a mass shooter.

Allen Police Chief Brian Harvey praised his officer for taking decisive action on May 6 when gunfire erupted at Allen Premium Outlets in an attack that killed eight before the attacker was fatally shot.

“This video shows how quickly a routine interaction with the public became a life-or-death situation,” Allen Police Chief Brian Harvey said. «The officer recognized the danger, ran to the gunfire and neutralized the threat, and for his actions, the Allen community will be forever grateful.»

Video showed the officer was standing by his car in the mall parking lot having a pleasant conversation with children and a woman when shots suddenly rang out.

He then ran towards the sound of gunshots and the unidentified officer finally opened fire.

«Police shots, I shot him down,» the officer yelled. «I’m here for Lids, I knocked him down,» he said, referring to the hat shop.

He yelled at others to move away from the body of the gunman, who was in a blur outside a Fatburger restaurant.

«I shot him down!» said the officer. «I think so. I don’t hear any shots. Is he down?»

Another officer later confirmed the death.

«Damn brother! Got it brother!» said the shooting officer.

The victims were Kyu Song Cho, 37; Cindy Cho, 35; James Cho, 3; Aishwarya Thatikonda, 27; Daniela Mendoza, eleven; Sofia Mendoza, 8; Christian LaCour, twenty; Elio Cumana-Rivas32

This is a developing story. Please check for updates.

lindsey pipia contributed.