Production at Libya’s El Feel oilfield has been shut down, National Oil Corporation (NOC) and two oil engineers based there said on Wednesday, only a few days after it had resumed operations following a months-long blockade.

NOC and one of the engineers said it was shut down by an armed group.

“This is a serious criminal act against the Libyan people and its interests. It demonstrates again the failure of the Petroleum Facilities Guard (PFG) to carry out their legal duties of protecting the oil sector’s facilities and workers,” NOC stated.

Production at another field, Sharara, that had also restarted after military gains by the internationally recognised government, was shut down on Tuesday.