Increasing numbers of foreign diplomats have been evacuated from Khartoum, as the Sudanese army and a paramilitary group fight to control the capital.
France, Germany, Canada, Spain and Italy are among the latest countries to announce that they’ve taken their diplomatic staff to safety.
A vicious power struggle between the regular army and a powerful paramilitary force has led to violence across the country.
The US embassy in Khartoum is now closed, and a tweet on its official feed says it is not safe enough for the government to evacuate private US citizens.
The UK government managed to airlift British diplomats and their families out of the country in what was described as a “complex and rapid” operation. Foreign Minister James Cleverly said options to evacuate the remaining British nationals in Sudan were “severely limited”.
But foreign civilians have been reporting difficulties in trying to get out of Sudan.
One British national told the BBC of a chaotic coach journey towards Egypt — a trip organised by his Sudanese employer and not his own government.
The city’s international airport has been rendered inoperable by the conflict.
There have been desperate calls for help from students, many of whom come from other African countries, Asia and the Middle East.
More than 400 people have been killed and thousands wounded, according to the UN, amid fears of a worsening humanitarian disaster.