LONG BEACH, Calif. (AP) — Groups of gunmen attacked two separate parties during the night in the Los Angeles area, killing two teenagers and wounding at least nine other people, authorities said Sunday.

There were no immediate arrests in either shooting, police said.

The first shooting happened late Saturday at a Long Beach Masonic temple, where several gang members apparently crashed a birthday party and started a fight, police Sgt. Dina Zapalski said.

A 17-year-old boy and a 15-year-old girl died of gunshot wounds, Zapalski said. Another 17-year-old boy suffered injuries that were not life-threatening.

Hundreds of partygoers were taken by bus to a nearby elementary school, where police questioned them, Zapalski said.