GENEVA: The UN human rights office called on Wednesday for an independent investigation into the discovery of mass graves at detention centers in Libya’s capital Tripoli.

It expressed concerns about the discovery of dozens of bodies, some charred and buried and others in hospital refrigerators, in an area of Libya’s capital controlled by an armed militia whose leader was killed last month.

UN High Commissioner for Human Rights Volker Türk said he was shocked by revelations that gross rights violations were uncovered at detention facilities in Tripoli run by the Stabilization Support Authority, or SSA, an armed group whose commander, Abdel-Ghani Al-Kikli, was killed in militia fighting in mid-May.

It was established to uphold the rule of law and falls under the Presidential Council that came to power in 2021 with the Government of National Unity of Abdul Hamid Dbeibah through a UN-backed process.

The rights office said it later received information on the excavation of 10 charred bodies at the SSA headquarters in the Abu Salim neighborhood and another 67 bodies discovered in refrigerators in the Abu Salim and Al-Khadra Hospitals. 

It also cited reports of a burial site at the Tripoli Zoo that was run by the SSA.

The office said the identities of the bodies were not immediately clear. “Our worst-held fears are being confirmed: Dozens of bodies have been discovered at these sites, along with the discovery of suspected instruments of torture and abuse, and potential evidence of extrajudicial killings,” Türk said in a statement.

Türk called on authorities to seal the area to preserve evidence and said there needed to be accountability for the killings. He said the UN should be granted access to the sites to document rights violations.

Libya, a major oil producer in the Mediterranean, has known little law and order since a 2011 NATO-backed uprising that toppled dictator Muammar Qaddafi and eventually divided the country between warring eastern and western factions.

The rights body said the discovery of dozens of bodies and suspected instruments of torture and abuse confirmed longstanding findings by the UN that human rights violations were committed at such sites.

“We call on the Libyan authorities to conduct independent, impartial and transparent investigations into these discoveries,” it said in a statement. It urged the authorities to preserve evidence and grant Libya’s forensic teams, as well as the United Nations, full access to the sites.

Outright war fighting in Libya abated with a ceasefire in 2020. However, efforts to end the political crisis have failed, with major factions occasionally joining forces in armed clashes and competing for control over Libya’s substantial energy resources.

Armed clashes erupted on Monday evening and gunfire echoed in the center and other parts of Tripoli following reports that the commander of one of its most powerful armed groups had been killed, three residents said by phone.