The U.N. Security Council called on Friday for a ceasefire in Libya as the death toll in Tripoli reached 1,000.
The U.N. security council condemned the air strike that hit a detention centre for migrants east of Tripoli late on Tuesday.
At least 53 migrants were killed, six children among the dead, on Tuesday night in the air raid on a detention centre in the Tripoli suburb of Tajoura.
Libyan commander Khalifa Haftar who controls eastern and southern Libya launched an offensive in early April against the UN-recognised government of National Accord (GNA).
The U.N. stressed the need for de-escalating the situation.
Air strikes and ground fighting have left nearly 1,000 people dead and some 5,000 wounded.
World powers have been divided over how to respond to Haftar’s offensive. The United Nations has called for an independent investigation into the air attack and called for a return to political talks and arms embargo on Libya.
UN agencies and humanitarian groups have repeatedly voiced concern over the plight of thousands of migrants and refugees held in detention centres.