An attack has killed up to forty migrants at a detention centre on the outskirts of the Libyan capital Tripoli, government officials say.
About eighty people were injured at the centre, which the UN-backed government says was hit by an air strike.
Anti-government forces led by warlord General Khalifa Haftar have accused government forces of bombarding it.
However, a spokesman for the internationally-backed government in Tripoli told the BBC that General Haftar’s forces have been using war-planes to attack government installations and troops, and may have targeted the detention centre.
Most of the dead are believed to be Africans, attempting to reach Europe on secret sea crossings from Libya.
The small north African country has been torn by violence and division since long-time ruler Muammar Gaddafi was deposed and killed in 2011.