KHARTOUM, Sudan: As explosions and gunfire thundered outside, Sudanese in the capital Khartoum and other cities huddled in their homes, while the army and a powerful rival force battled in the streets for control of the country.

At least 185 people have been killed and over 1,800 wounded since the fighting erupted, UN envoy Volker Perthes told reporters. The two sides are using tanks, artillery and other heavy weapons in densely populated areas. Fighter jets swooped overhead and anti-aircraft fire lit up the skies as darkness fell.

The toll could be much higher because there are many bodies in the streets around central Khartoum that no one can reach because of the clashes. There has been no official word on how many civilians or combatants have been killed. The doctors’ syndicate earlier put the number of civilian deaths at 97.

The sudden outbreak of violence over the weekend between the nation’s two top generals, each backed by tens of thousands of heavily armed fighters, trapped millions of people in their homes or wherever they could find shelter, with supplies running low and several hospitals forced to shut down.

Top diplomats on four continents scrambled to broker a truce, and the UN Security Council was set to discuss the crisis. 

Japan foreign minister Yoshimasa Hayashi said G7 countries, whose ministers are meeting in Karuizawa, agreed that the violence in Sudan must stop immediately.

US Secretary of State Antony Blinken expressed “grave concern” about Sudanese civilian deaths and injuries in separate calls with the heads of Sudan’s armed forces and the rival paramilitary Rapid Support Force, a State Department official said on Tuesday.

Blinken stressed the responsibility of both generals, Abdel Fattah Al-Burhan and Mohamed Hamdan Dagalo to ensure the safety of non-combatants, including diplomatic personal and humanitarian workers, the official said.

“Gunfire and shelling are everywhere,” Awadeya Mahmoud Koko, head of a union for thousands of tea vendors and other food workers, said from her home in a southern district of Khartoum.

She said a shell stuck a neighbor’s house Sunday, killing at least three people. “We couldn’t take them to a hospital or bury them.”

In central Khartoum, sustained gunfire erupted and white smoke rose near the main military headquarters, a major battle front. Nearby, at least 88 students and staffers have been trapped in the engineering college library at Khartoum University since the start of fighting, one of the students said in a video posted online Monday. One student was killed during clashes outside and another wounded, he said. They do not have food or water, he said, showing a room full of people sleeping on the floor.

Even in a country with a long history of military coups, the scenes of fighting in the capital and its adjoining city Omdurman across the Nile River were unprecedented. The turmoil comes just days before Sudanese were to celebrate Eid Al-Fitr, the holiday marking the end of Ramadan, the Islamic month of fasting.

The power struggle pits Gen. Abdel-Fattah Burhan, the commander of the armed forces, against Gen. Mohammed Hamdan Dagalo, the head of the Rapid Support Forces, a paramilitary group. The former allies jointly orchestrated an October 2021 military coup. The violence has raised the specter of civil war just as Sudanese were trying to revive the drive for a democratic, civilian government after decades of military rule.

Under international pressure, Burhan and Dagalo had recently agreed to a framework agreement with political parties and pro-democracy groups, but the signing was repeatedly delayed as tensions rose over the integration of the RSF into the armed forces and the future chain of command.

Egyptian President Abdel Fattah El-Sisi said late Monday that Cairo was in “constant contact” with both the army and the RSF, urging them to halt the fighting and return to negotiations.

But both generals have thus far dug in, demanding the other’s surrender.

The European Union’s foreign policy chief, Josep Borrell tweeted that the EU ambassador to Sudan “was assaulted in his own residency,” without providing further details. EU officials did not immediately respond to requests for comment.

Dagalo, whose forces grew out of the notorious Janjaweed militias in Sudan’s Darfur region, has portrayed himself as a defender of democracy and branded Burhan as the aggressor and a “radical Islamist.” Both generals have a long history of human rights abuses and their forces have cracked down on pro-democracy activists.

Heavy gunbattles raged in multiple parts of the capital and Omdurman, where the two sides have brought in tens of thousands of troops, positioning them in nearly every neighborhood.

Twelve hospitals in the capital area have been “forcefully evacuated” and are “out of service” because of attacks or power outages, the Sudan Doctors’ Syndicate said, out of a total of around 20 hospitals. Four other hospitals outside the capital have also shut down, it added in a statement late Monday.

Hadia Saeed said she and her three children were sheltering in one room on the ground floor of their home for fear of the shelling as gunfire rattled across their Bahri district in north Khartoum. They have food for a few more days, but “after that we don’t know what to do,” she said.

Residents said fierce fighting with artillery and other heavy weapons raged Monday afternoon in the Gabra neighborhood southwest of Khartoum. People were trapped and screaming inside their homes, said Asmaa Al-Toum, a physician living in the area.

Fighting has been particularly fierce around each side’s main bases and at strategic government buildings — all of which are in residential areas.

The military on Monday claimed to have secured the main television building in Omdurman, fending off the RSF after days of fighting. State-run Sudan TV resumed broadcasting.

On Sunday, the RSF said it abandoned its main barracks and base, in Omdurman, which the armed forces had pounded with airstrikes. Online videos Monday purported to show the bodies of dozens of men said to be RSF fighters at the base, strewn over beds, the floor of a clinic and outside in a yard. The authenticity of the videos could not be confirmed independently.

The military and RSF were also fighting in most major centers around the country, including in the western Darfur region and parts of the north and the east, by the borders with Egypt and Ethiopia. Battles raged Monday around a strategic air base in Merowe, some 350 kilometers (215 miles) northwest of the capital, with both sides claiming control of the facility.

Only four years ago, Sudan inspired hope after a popular uprising helped depose long-time autocratic leader Omar Al-Bashir.

But the turmoil since, especially the 2021 coup, has frustrated the democracy drive and wrecked the economy. A third of the population — around 16 million people — now depends on humanitarian assistance in the resource-rich nation, Africa’s third largest.

Save the Children, an international charity, said it has temporarily suspended most of its operations across Sudan. It said looters raided its offices in Darfur, stealing medical supplies, laptops, vehicles and a refrigerator. The World Food Program suspended operations over the weekend after three employees were killed in Darfur, and the International Rescue Committee has also halted most operations.

With the US, European Union, African and Arab nations all calling for an end to fighting, the UN Security Council was to discuss the developments in Sudan. UN Secretary-General Antonio Guterres said he was consulting with the Arab League, African Union and leaders in the region, urging anyone with influence to press for peace.

At a meeting of the Group of Seven wealthy nations in Japan on Monday, US Secretary of State Antony Blinken said the Sudanese “want the military back in the barracks. They want democracy. They want the civilian-led government, Sudan needs to return to that path.”