Updated

ACAPULCO, Mexico (AP) — A team of gunmen has burst into a girl's coming-out party in Mexico, and three men have been killed.

Guerrero state police say the attackers arrived in two cars early Sunday in Coyuca de Catalan and opened fire at a party celebrating a girl's 15th birthday.

Police say some of those at the party were armed and fired back at the attackers. Two of the people at the party and one attacker died. Police say they have not yet determined a motive, but the area is plagued by drug trafficking.