Police seek motive to mass shooting as 11th victim dies

An 11th victim has died from injuries suffered in a weekend shooting rampage at a Los Angeles-area dance hall, as investigators searched for a motive behind one of California's bloodiest outbursts of mass gun violence.

Police identified Huu Can Tran, 72 as the lone suspect in a massacre that unfolded Saturday night in the midst of a Lunar New Year celebration Monterey Park, just east of Los Angeles.

He drove to another dance hall where a second attack was thwarted, and later killed himself as police closed in to make an arrest hours after the shooting.

Authorities said 10 people were killed and 10 wounded when Tran opened fire at the Star Ballroom Dance Studio, a venue popular with older patrons of Asian descent.

One of the victims hospitalized in critical condition died of his wounds on Monday, Monterey Park Police Chief Scott Wiese told reporters.

All of the deceased were between the ages of 50 and 80.

Los Angeles County Sheriff Robert Luna said investigators recovered 42 shell casings from the studio and a large-capacity ammunition magazine.

He said the search of the suspect's mobile home in a gated senior-living community in the town of Hemet, about 80 miles east of Los Angeles, turned up a rifle, various electronic devices and items "that lead us to believe the suspect was manufacturing homemade" weapons silencers.

Police also seized hundreds of rounds of ammunition from the dwelling, Luna said.

According to police, Tran barged into another dance hall about 20 minutes later in the neighboring community of Alhambra, where he was disarmed by an employee and fled that scene, triggering an overnight manhunt. Luna credited the owner of the dance hall with disarming the would-be shooter.

The search for the gunman ended on Sunday morning when the suspect shot himself as police officer surrounded his cargo van in a parking lot in Torrance, south of Los Angeles.

Authorities on Sunday said a motive for the shooting remained to be determined.

On Sunday, Luna said "everything is on the table" in terms of identifying the reasons for the shooting.