The commander of Sudan’s paramilitary force has called for a “temporary ceasefire” amid mounting international pressure as the death toll from four days of fighting has topped 180.

Fighting has taken place since Saturday between the president-backed Sudanese Armed Forces and the paramilitary Rapid Support Force loyal to the country’s powerful vice president, sparking fears of a wider civil conflict.

General Mohamed Hamdan Dagalo, the military vice president known as Hemeti who commands the RSF, said on Tuesday that agreed to a one-day truce after speaking by phone with US Secretary of State Anthony Blinken, but the other side has not complied.

“RSF confirms its approval of a 24-hour ceasefire to ensure the safe withdrawal of civilians and the evacuation of the wounded,” he said. “Unfortunately, the Sudanese armed forces have failed to honor this ceasefire by shelling populated areas and putting civilian lives at risk.”

At least 180 people have been killed and more than 1,800 wounded since the start of fighting centered on the capital Khartoum, according to the UN.