Sudan opposition leader Sadiq al-Mahdi held after Darfur abuse claims
Opposition leader arrested after accusing security service of abuses against Darfur civilians

Sudan's state security arrested opposition leader and ex-premier Sadiq al-Mahdi after he reportedly accused a counter-insurgency unit of rape and other abuses of civilians in Darfur.
Mahdi is the head of the Umma Party, the most prominent party opposing President Omar al-Bashir, who ousted him in 1989.
A Umma official said agents arrived in two trucks and several cars to arrest Mahdi, one of the highest-profile figures to be detained in Sudan in recent years.
The National Intelligence and Security Service (NISS) has the right to detain people for more than four months without judicial review.
All the allegations against us are lies
Earlier on Saturday Mahdi had addressed thousands of people in Gezira state, south of the capital Khartoum.