The United Nations warned Sudan was nearing its “breaking point” as its capital was rocked by gun battles and explosions on Monday, potentially forcing 800,000 people may flee, despite the latest truce formally agreed upon between the barring parties.

Sudan’s turmoil has seen aid workers killed, hospitals bombed, humanitarian facilities looted, and foreign aid groups forced to suspend most of their operations. 

“The scale and speed of what is unfolding is unprecedented in Sudan,” said Stephane Dujarric, spokesman for UN chief Antonio Guterres. “We are extremely concerned by the immediate as well as long-term impact on all people in Sudan, and the broader region.”

On Monday, top UN humanitarian official Martin Griffiths was heading to the region to help bring relief to the millions “whose lives have turned upside down overnight.”

“The humanitarian situation is reaching breaking point,” Dujarric said.