Libya's state-owned energy firm has declared a state of force majeure at the Al-Sharara oilfield after protests disrupted production at the facility.
The field, which had daily production of up to 300,000 barrels, was closed a few days ago following protests in the area.
The National Oil Corporation says the closure has resulted in the suspension of crude oil supplies from the field to the Zawiya terminal.
The NOC did not elaborate on the protesters' demands but says negotiations are ongoing to resume production as soon as possible.