Four people were killed and three others wounded Friday in a shootout between rival gangs in the eastern province of San Miguel, Salvadoran authorities said.

Two of the victims were pronounced dead at the scene and the other two died at the hospital, a police spokesman told Efe.

The casualties, all gang members, were gathered at a brickworks in the La Carmenza neighborhood when youths from a rival gang arrived and began shooting, the spokesman said, without identifying the gangs involved.

Church-mediated talks between the jailed leaders of El Salvador's two largest gangs, Mara Salvatrucha and Mara 18, led last March to a truce that officials credit with reducing the number of homicides by 50 percent.

Last month saw the start of a second phase of the truce, which is to involve the gradual declaration of violence-free municipalities.

The plan has taken effect in four municipalities and is supposed to be extended to another 14. EFE