Huu Can Tran, the suspect in the Monterey Park, Calif., mass shooting, had a prior gun conviction and extra ammunition in his home, police said Monday.

A search of Tran’s home at The Lakes at Hemet West, a gated senior community in Hemet, Calif., turned up “a rifle, hundreds of rounds of ammunition and evidence he was manufacturing gun silencers,” according to The Associated Press.

This combination image created using photos provided by the Los Angeles County Sheriff’s Department shows a male suspect allegedly involved in a shooting on Saturday, Jan. 21, 2023, in Monterey Park, Calif. (AP)

Tran also was convicted of unlawful possession of a firearm in 1990, Los Angeles Sheriff Robert Luna said.

A spokesperson for Hemet police told the AP there were no records of any incidents involving Tran. Earlier Monday, Hemet police confirmed Tran had described “past fraud, theft, and poisoning allegations involving his family in the Los Angeles area 10 to 20 years ago” on Jan. 7 and Jan. 9.

On Saturday, Tran, 72, fired dozens of times at the Star Ballroom Dance Studio in Monterey Park during a Lunar New Year celebration, killing 11 and wounding nine. After fleeing the scene, Tran then was disarmed by a man at a second dance hall in nearby Alhambra.

Investigators leave the Star Ballroom Dance Studio following Saturday’s fatal mass shooting in Monterey Park, Calif., Sunday, Jan. 22, 2023. (Jae C. Hong/AP)

He died from a self-inflicted gunshot Sunday after a standoff with police.

Investigators are still searching for a motive.

“What drove a madman to do this? We don’t know, but we intend to find out,” sheriff Luna said.

“We all want answers to questions that we may never have answers to,” Monterey Park Police Chief Scott Wiese said. “That’s kind of the enigma of this. I know that my individual officers would like to know why. I know the families want to know why. The why is a big part of this. The problem is, we may never know the why.”

With News Wire Services