ANTOINE ROLLAND REBEL fighters in the Central African Republic attacked and partially occupied a diamond-mining town on Sunday, four security and humanitarian sources said, a day before authorities are due to declare results of the presidential election. At least five rebels were killed and two army soldiers wounded in the clashes in Bangassou, which lies on the southern border with the Democratic Republic of Congo, the U.N. peacekeeping mission MINUSCA said in a statement. Rebels, whom the government and United Nations say are backed by ex-president Francois Bozize, launched an offensive last month after the constitutional court rejected Bozize's candidacy…