TRIPOLI — The United States called on Tuesday for an immediate resumption of Libya's lifeline oil exports that have been blocked by forces loyal to chief of the Libyan National Army Gen. Khalifa Haftar since last week.

"The suspension of National Oil Corporation (NOC) operations risks exacerbating the humanitarian emergency in #Libya and inflicting further needless suffering on the Libyan people," the US embassy in Tripoli tweeted.

"NOC operations should resume immediately," it said.

Haftar's forces, at war with fighters loyal to the Tripoli-based Government of National Accord, blocked oil exports from Libya's main ports on Saturday, a day before an international peace conference.

The move to cripple the country's main income source was a protest against Turkey's decision to send troops to shore up Haftar's rivals.

The action has suspended operations from Libya's "oil crescent", blocking several export terminals including Brega, Ras Lanuf and Al-Sidra ports.

"The storage capacity of these ports is limited and the NOC will be obliged to put a complete halt to crude production once maximum capacity has been reached," the oil company said on Monday.

The NOC said Libya's daily crude output of 1.3 million barrels a day would be virtually wiped out.

According to industry experts, Washington also opposes the suspension of Libyan crude exports because of the impact on the world oil market.

The oil-rich North African country has been torn by fighting between rival armed factions since a 2011 NATO-backed uprising killed dictator Muammar Gadhafi and toppled his regime. — AFP