Colombia’s southern Transandino oil pipeline has been damaged in a bomb attack, state-run oil company Ecopetrol said on May 17.

The attack, which took place overnight in the municipality of Pupiales, in Narino province, destroyed a piece of the pipeline’s tubing, the company said in a statement.

The 306 km (190 mile) pipeline, which has the capacity to transport 85,000 barrels of crude per day, was not operating at the time of the explosion, Ecopetrol said.

The company said it would repair the pipeline once the military had secured the area.

Ecopetrol did not say which group was responsible for the bombing, but National Liberation Army (ELN) rebels have frequently been behind attacks on oil infrastructure and are active in Narino. Dissident former members of the FARC rebels, who signed a peace deal in 2016, also have a presence there.

The ELN recently restarted peace talks with the government in Cuba, after original host Ecuador pulled its backing for the negotiations.

The Transandino was last halted in April after another bombing.