The West Darfur Doctors’ Committee said Wednesday that 87 people have died in five days of fighting between Massalit and Arab communities in Sudan.

The violence was a new round in a conflict that saw deadly clashes earlier this year and in 2019. The fighting in El Geneina, the state capital of West Darfur, forced more than 100,000 people to flee their homes in January, according to the UN. The attacks took place soon after the UN withdrew its peacekeepers from the region.

The fighting destroyed a power station, an ambulance was attacked and a rocket-propelled grenade hit the Sultan Tajeldin Hospital. Other hospitals were damaged in the fighting.

The Doctors’ Committee condemned the attacks “in the strongest terms,” calling them “barbaric behavior which cannot be justified under any circumstances.”

The UN said on Tuesday that the “inter-communal violence further deteriorates an already dire situation for vulnerable people.”

The government declared a state of emergency on Monday and deployed troops to West Darfur. The UN said it suspended flights and aid to El Geneina. The airport has served as a key hub for humanitarian assistance. The UN said the decision to end flights into the city would affect up to 700,000 people.