Saudi Arabia has announced another attempted ceasefire between the warring military factions in Sudan.

The Saudi foreign ministry said the Sudanese army and its paramilitary rivals had agreed a 24-hour truce.

It is due to begin on Saturday at 05:00 GMT.

Saudi Arabia and the United States have made repeated mediation efforts since the fighting erupted in April.

The foreign ministry in Riyadh warned that if the ceasefire failed, it would consider suspending peace efforts.

Previous truces have been largely ignored.

The UN estimates that nearly 1.5 million people have been forced from their homes since the fighting began, many of them crossing to neighbouring countries.