Libya's National Oil Corporation (NOC) has revealed what it calls "catastrophic damage" to the Ras Lanuf tanker terminal after an attack by armed militia.
It confirmed the loss of storage tanks two and 12 at the port, cutting crude oil capacity by 400,000 barrels to 550,000 barrels.
Prior to the attack by forces controlled by Ibrahim Jadhran, Ras Lanuf operated five crude oil storage tanks, it said.