A Sudanese politician who had been a member of the dissolved joint civilian-military government has been arrested. 

Relatives say Mohamed al-Faki Suleiman was picked up near his home in the capital Khartoum. 

This follows the arrest of two other politicians last week. 

They were part of a task force trying to dismantle the network established by the former president Omar al-Bashir. 

It was also attempting to recover money and assets looted during his three-decade rule.

Sudan is in the midst of a political and economic crisis following a coup in October which derailed a timetable towards elections. 

Since the coup there have been massive demonstrations against the military. 

Security forces have killed about 80 protesters.