Africa News Tonight: Loud explosions rattled Khartoum today as Sudan's capital degenerated further into anarchy with hospitals, banks, shops and wheat silos ransacked by looters. South Africa’s business sector is concerned about the economic consequences of rising tensions between Pretoria and Washington. And, Mali's interim military government has rejected a U.N. human rights office report on the alleged execution of at least 500 people by Malian soldiers and unidentified foreign fighters during an operation last year. For this and more, stay tuned to Africa News Tonight!