Primal Instinct: California Shooting Hero Tells Of Wrestling Killer's Gun

Five men and five women, all in their 50s or 60s, were killed by the gunman in Monterey Park on Saturday night.

The young coder credited with disarming the 72-year-old suspect in a mass shooting during Lunar New Year celebrations in California has described his "primal" battle with the gunman.

The man, identified by the New York Times as 26-year-old Brandon Tsay, was in the office of the Lai Lai Ballroom & Studio in Alhambra on Saturday night watching dancers when he looked up to see the suspect pointing a gun at him.

"My heart sank, I knew I was going to die," he told the newspaper.

"That moment, it was primal instinct," he said. "Something happened there. I don't know what came over me."