Four Colombian army soldiers died and four civilians were wounded in an attack apparently carried out by FARC guerrillas in the municipality of Montañita, in southern Caqueta province, the Defense Ministry announced here Monday.

A non-commissioned officer and three soldiers died "after an attack by guerrillas who, disguised as construction workers, opened fire on the troops" on the road linking Montañita with Florencia, the capital of Caqueta, the ministry said.

"Four civilians were wounded in the attack and, for the Defense Ministry, this is a clear violation of International Humanitarian Law," the announcement continued.

The soldiers were guarding a construction site around the San Pedro bridge near the town when the guerrillas, dressed like National Highway Institute workers, opened fire on them.

The attack came one day after Colombia's legislative elections, which transpired amid calm except for some minor incidents where the public order was disturbed, authorities said.

The Revolutionary Armed Forces of Colombia, or FARC, is Colombia's largest guerrilla group and is currently engaged in peace talks with the government. EFE