mining town where at least two people were killed during riots last month over the delay to Congo's first democratic polls in 40 years. "People went out into the streets of Mbuji Mayi to celebrate on Saturday when rumours went around that Kabila had fled the country," Jean Tobie Okala, the U.N. peacekeeping mission's spokesman, said on Sunday. "Four people were killed and 10 others were injured when the police intervened, firing their weapons to disperse the crowd," he said, adding that the situation had calmed by Sunday. Mbuji Mayi is a stronghold for the UDPS opposition party, which is leading the calls for the resignation of the transitional government, which brings together former government members, opposition politicians and armed groups. Resource-rich Democratic Republic of Congo was crippled by the war that claimed around 4 million lives, mainly from conflict-related hunger and disease. --More 2304 Local Time 2004 GMT