Armed clashes have halted oil loadings at Libya’s Es Sider and Ras Lanuf oil ports, and at least one storage tank at Ras Lanuf was set alight, Reuters reported.

Forces loyal to Khalifa Haftar’s Libyan National Army (LNA) clashed with rival armed groups south of Ras Lanuf, where the LNA was reportedly using airstrikes against the opposing forces.

Es Sider and Ras Lanuf ports were reopened in 2016 after LNA forces took control of the areas and halted a longstanding blockade.

Storage tankers were damaged in previous clashes at the terminals, and have not yet been repaired.

No oil fields have been affected by the most recent fighting.

Ras Lanuf exported 110,000 barrels per day (b/d) of crude in May, while Es Sider’s exports totaled 300,000 b/d.

The Minerva Lisa oil tanker, scheduled to arrive at Es Sider to load crude on June 14, was advised to stay outside the port and was seen turning away without loading.