SERBS STEP UP ATTACKS ON SARAJEVO

SARAJEVO, April 5 (Hina) - Bosnian Serbs fired 13 mortar shells at 11 a.m. today at Sarajevo's western suburb of Hrasnica, near a UN supply road and the airport, the UN in Sarajevo said. UN spokeswoman Miriam Sohacko said that an investigation was in progress. The 20km NATO-monitored heavy weapons exclusion zone around the city bans the use of mortars. Serbs also fired at least three shells at the northern district of Sedrenik. The attack, which caused no casualties, was reported by UN Egyptian peacekeepers. But a civilian was wounded by sniper fire at 1.45 p.m. in front of the Holiday Inn hotel. The wounded civilian was Ljubomir Berberovic, former Sarajevo University chauncellor and outstanding member of the Serb Civic Council, a group advocating the unity of Bosnia- Herzegovina. Berberovic was taken to hospital in a UN vehicle, Sohacko said. UN French peacekeepers responded to the Serb sniper attack firing back from a 20mm gun. (hina) jn bk 051743 MET apr 95