Police in eastern Mexico say gunmen broke into a family party and opened fire, killing 13 people and wounding at least four others.

The Veracruz state Public Security Department says seven men, five women and a child were killed in the Friday night attack at an events hall in the oil city of Minatitlan near the Gulf of Mexico.

A department statement says the attackers asked for a man called "El Beky," who apparently owns a bar in the city. It's not clear if he was among the dead. Officials say they don't yet know a motive for the shooting.

Federal and state police set up checkpoints in the region to help in the search for the attackers.