(AGI) Rome, Feb 20 - Three ISIS suicide bombers perpetrated amassacre in the town of Al Qubah on Friday, detonating theircharges while in their car. The tally is of 40 dead and 70injured; most of the victims were also in their cars, queuingat a gas station near a security force building. Al Qubah islocated between the ISIS stronghold of Derna in eastern Libyaand Beida, the seat of Abdullah al Thani's government electedby the House of Representatives of Tobruk. ISIS militants havealso reportedly taken full control of Sirte, the birthplace ofMuammar Qaddafi, where they have imposed a curfew after theprayer of Isha, at 8 p.m. local time. A branch of Abu Bakr alBaghdadi's organisation has occupied the city's university andpublic buildings. On Wednesday, it published a video showingits militants parading in Sirte. On the diplomatic front, theIslamist forces that control Tripoli and Libya's western regionrefused to take part in new UN-mediated peace talks. Omar alHasi, the prime minister of the local government not recognisedby the international community, said there is no more room forthe dialogue sponsored by the UN's special envoy, BernardinoLeon, in the light of Egypt's air strikes within Libya, albeitagainst ISIS targets. It is the latest episode in a conflict oflegitimacy between the so-called shadow government in Tripoli,supported by Qatar and Turkey, and the 'secular' government ofAbdullah al Thani, supported by Egypt - primarily throughGeneral Khalifa Haftar - and the United Arab Emirates. It isalso recognised by the international community. Al Hasi alsoaccused former pro-Qaddafi groups of masterminding the rise ofthe Islamic State in Sirte. The international community remainsfirm in its view that negotiations are the only viable path.Strong support for Bernardino Leon's mediation was expressed bythe EU's High Representative for Foreign Affairs, FedericaMogherini, during her meeting in Washington with the U.S.Secretary of State, John Kerry, the UN Secretary General, BanKi-moon, and Egypt's foreign minister, Sameh Shoukry. . .