Thousands demonstrated in the capital Khartoum and the central city of Wad Madani.

Doctors say more than 60 other people have been killed during the many pro-democracy demonstrations - most were shot or hit by tear gas cannisters. Female protesters have also been sexually assaulted.

Sudan's ruling military council has said it will establish an anti-terrorism force to counter what it described as "potential threats".

Monday's protests come ahead of a planned visit by the US Assistant Secretary of State for African Affairs and the country's new Horn of Africa envoy.

Their first stop is Saudi Arabia where they are discussing possible ways of restoring a transitional government.