A Zimbabwean government official says South African President Thabo Mbeki has arrived in Harare for an urgent meeting with President Robert Mugabe. Mbeki will attend a meeting of southern African leaders later Saturday in Zambia to discuss the deepening political crisis in Zimbabwe. A Zimbabwean official speaking on condition of anonymity says Mbeki arrived in the country for talks with Mugabe before the summit. His motorcade was seen speeding away from the airport, the Associated Press reported.