MONTEREY PARK, Calif. (AP) — The 72-year-old gunman who sprayed bullets into a Southern California ballroom dance hall, killing 11 people, had no known connection to the victims and investigators are still trying to determine a motive for the massacre, the Los Angeles County sheriff said.

Before , Huu Can Tran parked a motorcycle just a block away from the ballroom in Monterey Park, which investigators believe he had planned to use as a backup getaway vehicle, Los Angeles County Sheriff Robert Luna said during a news conference Wednesday hours after police seized the motorcycle.

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