United Nations peacekeepers destroyed a Serb bunker near MAGLAJ with 30mm cannon fire following a seven-hour exchange of fire, in one of the most serious confrontations between U.N. forces and Serbs in Bosnia's two-year war, officials said.

The incident was one of five Friday involving attacks on U.N. troops in Bosnia, officials said, including a Serbian shelling attack on a U.N. base near BUGOJNO that left two British soldiers seriously wounded. Other attacks were reported near BIHAC, SREBRENICA and MOSTAR.

In SARAJEVO, the commanders of the Muslim-led Bosnian army and the Bosnian Croat militia signed an agreement to form an interim joint command until a new federal army could be created. The military merger is part of the U.S.-brokered accord joining Bosnia's Muslims and Croats in a federation.