The UN Security Council could not agree in a closed session on Wednesday on condemning an airstrike that hit migrants' detention center in Libya's Tajoura in eastern Tripoli, which killed and injured dozens.

The US has hindered the UK-drafted resolution that, if passed, would have condemned the airstrike and called for a ceasefire and a return to the political process, diplomatic sources reported.

The President of the Security Council, meanwhile, refused to comment on which country was the one that prevented the resolution from passing.

The Libyan Foreign Minister Mohammed Sayala sent a letter to the Security Council's President for an emergency session after Tajoura attack and called for taking the necessary measures to stop recurrent attacks on civilians and hold the perpetrators accountable.

The letter accuses foreign countries of being behind the recent airstrikes on locations in Tripoli.

The Head of the High Council of State (HCS) Khalid Al-Mishri said on Twitter Wednesday that the country that is presiding over the African Union currently (referring to Egypt obviously) is the one that air-attacked the African migrants in Tajoura, adding that there must be a fact-finding committee from the UN to hold the perpetrators accountable for their crimes.

In the meantime, the Secretary General of the UN Antonio Guterres expressed anger over the attack on migrants and called for an independent investigation.

He said the UN had given information about the Tajoura migrants' center to all the warring parties so the migrants can be safe.