Most of the graves were in Tarhuna, south-east of Tripoli LONDON: Authorities must conduct “effective and transparent” investigations after eight mass graves were found in Libya, the UN"s support mission in the country said on Thursday. Most of the graves were in Tarhuna, south-east of Tripoli, which was a pro-Haftar stronghold until it was recaptured by Government of National Accord (GNA) forces. “UNSMIL notes with horror reports on the discovery of at least eight mass graves in past days, the majority of them in Tarhuna,” the UN mission said in a statement on Twitter. UNSMIL added that it welcomes a decision made by the justice minister to establish a committee to look into the mass graves. The UN mission also called on members of the committee to secure the mass graves, identify victims, establish causes of death and return the bodies to their next of kin.