Sudan: Gangs rampage in Sudan's capital

Violence is spreading across Sudan's capital, Khartoum, as riots which began after ex-rebel leader John Garang died have turned into retaliatory attacks. Tear gas has been used and a military helicopter is flying low over the city centre, where gangs of men with clubs and automatic weapons are roaming. There are traffic jams as residents try to flee. In three days of violence the death toll has risen to 84.