(Reuters) – An explosion at a rig operated ‌by state-run oil company PDVSA in Venezuela’s Los Llanos central region left at least 17 workers injured late on ​Sunday, including two with severe burns, three sources ​said on Monday.

The accident occurred at PDVSA’s Colven 02 rig in Apure State. ​Some of the injured workers were transported ​to Colombia for medical assistance, and others to the nearby town of Guasdualito, according to the sources, videos and ​photos on social media, which showed tall, ​yellow flames and a plume of black smoke.

Incidents are ‌frequent at PDVSA’s aging infrastructure, including fires and outages impacting oil production and refining operations. A similar explosion at a gas ​processing plant ​in Lake Maracaibo killed a worker last month.