Large numbers of residents are fleeing the Sudanese capital, Khartoum, as fighting continues for a fifth day in the city centre.
Civilians trapped in their homes have become increasingly desperate, as the morning brought a new wave of explosions.
Fighters of the paramilitary Rapid Support Forces (RSF) were seen driving around the streets in armoured vehicles and pick-up trucks, as army jets overhead fired missiles at RSF targets.
Eyewitnesses said the streets around the defence ministry and airport were littered with bodies.
Foreign embassies and the UN are planning operations to evacuate their own staff.
The UN says about 200 people are confirmed dead.
Aid agency compounds have been overrun by fighters.
The leaders of Kenya, Djibouti and South Sudan have put on hold their attempt to get into Sudan to try to mediate between the rival generals whose forces are battling for control.