Colombian state-run oil company Ecopetrol SA said on Sunday a bomb attack on the Transandino pipeline caused spillage in southwestern Narino close to the border with Ecuador.
The pipeline was not operating on Saturday during the attack, the first this year. There were 16 attacks in 2018, the company said.
Ecopetrol did not say who was responsible for the bombing or when the pipeline would return to service.
The 306-km (190-mile) Trasandino pipeline has capacity to transport about 85,000 barrels of crude daily from fields in Putumayo Province to the Pacific Ocean port of Tumaco, from where it is exported.