Sudan's army said on Saturday it had agreed to help evacuate foreign nationals as gunfire and air strikes echoed across Khartoum despite promises by warring sides to cease fire for three days after a week of strife that has killed hundreds.
The statement citing army chief Abdel Fatteh al-Burhan came after promises by rival Rapid Support Forces (RSF) leader Mohamed Hamdan Dagalo, known as Hemedti, to open airports for evacuations.
Residents of Khartoum's adjoining sister cities of Omdurman and Bahri said fighting intensified late on Saturday morning after a relative lull, with air strikes near the state broadcaster and gun battles in several areas.
Live television feeds showed a huge cloud of black smoke rising from Khartoum airport and the sound of shooting and artillery booms.
The army and the paramilitary RSF, which are waging a deadly power struggle across the country, had both issued statements saying they would uphold a three-day ceasefire from Friday for Islam's Eid al-Fitr holiday.
Sudan's sudden collapse into warfare a week ago has dashed plans to restore civilian rule, brought an already impoverished country to the brink of humanitarian catastrophe and threatened a wider conflict that could draw in outside powers.
There has been no sign yet that either side can secure a quick victory or is ready to back down and talk. The army has air power but the RSF is widely embedded in urban areas including around key facilities in central Khartoum.
However, Burhan said on Saturday that "we all need to sit as Sudanese and find the right way out to return hope and life," his most conciliatory comments since fighting began.
Burhan and Hemedti had held the top two positions on a ruling council overseeing a political transition after a 2021 coup that was meant to include a move to civilian rule and the RSF's merger into the army.
The World Health Organization reported on Friday that 413 people had been killed and 3,551 injured since fighting broke out. The death toll includes at least five aid workers in a country reliant on food aid.
International efforts to quell the violence have focused on the ceasefire, with US Secretary of State Anthony Blinken calling on them to honour the truce.
The army said the United States, Britain, France and China would evacuate diplomats and other nationals from Khartoum "in the coming hours", adding that Saudi Arabians and Jordanians were leaving by air via Port Sudan, 650 km from Khartoum.
Burhan said the army was providing safe pathways but that some airports including in Khartoum and Darfur's largest city Nyala were still problematic.
RSF chief Hemedti said on Facebook early on Saturday that he had received a phone call from UN Secretary General Antonio Guterres in which they "emphasised the necessity of adhering to a complete ceasefire and providing protection for humanitarian and medical workers".
The RSF said it was ready to partially open all airports to allow evacuations. However, Khartoum's international airport has been caught in fighting and the status of other airports or RSF's control over them is unclear.
Outside Khartoum the reports of the worst violence have come from Darfur, a western desert region that borders Chad and that suffered warfare from 2003 that has killed as many as 300,000 people and displaced 2.7 million, dragging on after successive peace deals.
A UN humanitarian update on Saturday said looters had taken at least 10 World Food Programme vehicles and six other food trucks after overrunning the agency's offices and warehouses in Nyala, in south Darfur.
In Omdurman, one of Khartoum's adjoining sister cities, there were fears over the fate of detainees in al-Huda prison, the largest in Sudan.
The army on Friday accused the RSF of raiding the prison, which the paramilitary force denied. Lawyers for a prisoner there said in a statement that an armed group had forcibly evacuated the prison, with the detainees' whereabouts unknown.
The Sudanese doctors union said early on Saturday that more than two thirds of hospitals in conflict areas were out of service, with 32 forcibly evacuated by soldiers or caught in crossfire.
Some of the remaining hospitals, which lack adequate water, staff and electricity, were only providing first aid. People posted urgent requests on social media for medical assistance, transport to hospital and prescription medication.
Any let-up in fighting on Saturday may accelerate a desperate rush by many Khartoum residents to flee the fighting, after spending days trapped in their homes or local districts under bombardment and with fighters roaming the streets.
Sudan borders seven countries including Africa's volatile Sahel region. The hostilities risk fanning regional tensions and Burhan said he had spoken to eastern Libyan military leader Khalifa Haftar after reports Haftar had supplied the RSF.
He said, in television comments, that he was also in touch with the leaders of two of Sudan's other neighbours Chad and Ethiopia.
The violence was triggered by disagreement over an internationally backed plan to form a new civilian government four years after the fall of autocrat Omar al-Bashir and two years after the military coup.
Both sides accuse the other of thwarting the transition.
Smoke is seen rise from buildings during clashes between the paramilitary Rapid Support Forces and the army in Khartoum North, Sudan. REUTERS/ Mohamed Nureldin Abdallah
People look for water during clashes between the paramilitary Rapid Support Forces and the army in Khartoum North, Sudan. REUTERS/Mohamed Nureldin Abdallah
People fill barrels with water in southern Khartoum, amid water shortages caused by ongoing battles between the forces of two rival Sudanese general. AFP
People gather to get bread during clashes between the paramilitary Rapid Support Forces and the army in Khartoum North, Sudan. REUTERS/Mohamed Nureldin Abdallah