In Sudan, four people were killed at a demonstration in Omdurman, the twin city of Sudan's capital Khartoum and elsewhere across the country.<br />''<br />''The marches were held to demand justice for the killing of at least six people – including four students – by security forces during student protests in a central province Monday. <br />''<br />''The military council said yesterday that it has arrested seven members of the paramilitary Rapid Support Forces who had fired live ammunition during Monday's protest. <br />