Libya's national oil corporation has warned that port blockades in the east of the country could result in the loss of some 850,000 barrels of crude oil per day.

In a statement, the oil agency of the internationally recognised government in Tripoli said it could not guarantee oil exports from Libya.

A self-styled army in the eastern region has for the last week blocked exports after armed clashes between rival factions over oil terminals at Es Sidra and Ras Lanouf.