Zimbabwe’s president said he would fire government ministers accused of soliciting for bribes in a bid to purge corruption from his party as loyalists met at a convention to map out a winning election strategy to end a conflict-ridden four-year-old coalition.President Robert Mugabe said in the state media Friday the convention in the provincial city of Gweru should prepare for a convincing victory "that will leave no room for doubt.” The longtime leader has said he wants elections in March, a target that doesn’t seem realistic.A year after violent and inconclusive elections in 2008, Mugabe formed a coalition government with then opposition leader Morgan Tsvangirai, who’s now prime minister. They’ve agreed on little since then and the government remains split along party lines.Mugabe, 88, has been endorsed as his ZANU-PF party’s presidential candidate and is expected to face Tsvangirai in the upcoming polls.Speaking in the local Shona language on Friday, Mugabe said he has received complaints from former South African president Thabo Mbeki that ministers from his party are soliciting for bribes from South African investors looking to do business in Zimbabwe. He told delegates that they must not be scared to report on ministers involved in corruption because to not do so would mean "you are hiding corruption.”The convention is being held in a new $6.5 million conference hall. The expenditure was criticized by some Mugabe opponents, coming at a time when at least 1.6 million Zimbabweans, according to the United Nations, need food aid. Organizers of the convention say the center was built to "show that ZANU-PF is here and will be there in the future.”Opposition leaders have accused Mugabe and his party of using proceeds from the nation’s eastern diamond fields to fund a parallel government amid fears the money will be used to influence the elections by buying votes and funding violence and intimidation against those who oppose Mugabe’s rule. A recent report by a Canadian-based diamond watchdog, Partnership Africa Canada, claimed that at least $2 billion in diamond revenue has been stolen from the Marange diamond fields by Mugabe’s loyalists since 2008.