Around 300 migrants are still being held in the detention centre in Libya where more than 44 people were killed in an air strike, the International Organization for Migration (IOM) said on Thursday.
An air strike late on Tuesday hit a detention centre for mainly African migrants in a suburb of the Libyan capital of Tripoli, killing at least 40 people and wounding 80, a health official said.
The UN Security Council called on Friday for a ceasefire in Libya as the death toll from a three-month offensive on Tripoli reached 1,000, including scores killed in an air strike that hit a detention centre
Recent clashes between rival Libyan militias for control of the capital Tripoli have displaced more than 18,000 people, the UN said, and prompted the prosecutor of the International Criminal Court (ICC) to warn on Tuesday that she could investigate and possibly prosecute new offences.
The death of several migrants, mostly from Bangladesh, when their boat capsized in the Mediterranean Sea after it left Libya hoping to reach Europe, brings to the fore the continuing plight of migrants.
Eastern Libyan forces will pursue their advance on the capital Tripoli, the head of the eastern parliament in the divided country said on Saturday, despite international calls for a halt in an offensive that risks causing many civilian casualties.
The UN Security Council will hold urgent closed-door consultations on Wednesday on the crisis in Libya, where fighting has derailed UN-led efforts to prepare for elections.
Libya is one of the main departure points for African migrants, fleeing poverty and war, to try to reach Italy by boat, but many are picked up and brought back by the Libyan coast guard, supported by the European Union.
UN chief Antonio Guterres denounced the "horrendous" attack and demanded an independent investigation, as a divided Security Council failed to condemn the strike.