Sudan's military council and opposition groups said they had agreed on Monday to a power structure for the country's transition but have yet to decide how long it will last or the make-up of transitional bodies.

The apparent progress was offset by rising tension in the capital Khartoum, where paramilitary forces patrolled the streets into the evening, using tear gas and gunfire to disrupt protests blocking roads.

Protesters said counterrevolutionaries were inciting violence in an attempt to sabotage a political deal. An opposition doctors' group said three protesters had been wounded by gunfire, and several others by sticks or whips.