Five people were shot to death and another wounded by unknown gunmen who burst into a birthday party in a rural portion of the Colombian city of Santa Marta, authorities said Wednesday.

The mass slaying occurred after midnight Tuesday on a farm in the Masinga rural settlement, some five kilometers (three miles) from Santa Marta, capital of the Caribbean coastal province of Magdalena, police said.

Among those killed were two women and three men who earlier in the evening had participated in a birthday party and were still in the house on the Porton Verde farm when the attack occurred.

The property apparently had been rented for the party attended by about 30 people, most of whom had already left when the attackers arrived, the daily El Heraldo said in its online edition.

The commander of the Santa Marta Metropolitan Police, Col. Fredy Tibaduiza Niño, said that according to witnesses, six armed men came to the house and fired indiscriminately at those present. EFE