The United Nations urged on Friday a truce in fighting between the Libyan National Army and Government of National Accord. The UN mission in Libya "calls on all parties to accept a humanitarian truce for Eid Al-Adha", it said in a statement on Twitter late Thursday, referring to the Muslim festival of sacrifice that begins on Sunday. "The mission hopes to receive written agreement from the parties no later than midnight (2200 GMT) on Friday", the statement said. The LNA had launched an operation against Tripoli to cleanse it of criminal and terrorist gangs in April. Over the past four months, 1,093 people have been killed in fighting, according to the World Health Organization (WHO). UN envoy Ghassan Salame has already called several times for humanitarian truces, without success. In a video conference with the UN Security Council late last month, Salame warned against mounting tensions and called for a ceasefire for Eid Al-Adha. The clashes since early April have wounded 5,752 people and displaced more than 100,000, the WHO says.