KINSHASA, Nov 12, SPA -- U.N. peacekeeping troops in armored vehicles clamped a heavy security shield on Congo's capital Kinshasa on Sunday after weekend clashes between the forces of presidential contenders shook the riverside city. France's RFI radio said four people were killed ingun battles on Saturday between supporters of incumbent President Joseph Kabila and his Vice-President Jean-Pierre Bemba, as Democratic Republic of Congo awaited the results of their historic Oct. 29 run-off vote. U.N. radio said two civilians were killed. Official resultsfrom the run-off are due within a week. The streets of Kinshasa's business district, which hadechoed on Saturday to the sound of automatic rifles,rocket-propelled grenades and mortars, were calm on Sunday. The guns fell silent after emergency talks betweenrepresentatives of Kabila and Bemba and U.N. leaders of the world's biggest peacekeeping force which is deployed across the vast, former Belgian colony in central Africa. Blue-helmeted U.N. troops in white-painted armored cars guarded main crossroads and offices and premises in Kinshasa belonging to Bemba, the scene of Saturday's fighting.--SPA www.spa.gov.sa/402519