This is the third attack on the pipeline this month.

Regional army sources reportedly blamed leftist guerrillas responsible for the explosion on the pipeline’s stretch once again near Saravena town in Arauca province.

The explosion has caused oil spill, which has affected the local water source and vegetation, but the attack caused no injuries.

The 780km Limon-Covenas oil pipeline, which is second in length in Colombia, moves crude oil from Cano Limon field in Arauca province to Covenas maritime and tanker terminal in Sucre province.

The first explosion on the pipeline took place on 4 July near El Tarra in Santander province, while the second blast occurred on the next day near Saravena in Arauca province.