Videos showed paramilitaries opening fire on the village in what had been Sudan’s breadbasket region, causing the latest mass civilian casualties in a brutal yearlong war.

A gun and artillery assault by Sudanese paramilitaries on a village in Sudan’s main farming region killed at least 104 people, including dozens of children, Sudanese pro-democracy activists said.The exact circumstances of the attack on Wednesday at Wad al-Noura, a village 70 miles south of the capital, Khartoum, were disputed.

“Even by the tragic standards of Sudan’s conflict, the images emerging from Wad Al-Noura are heartbreaking,” Clementine Nkweta-Salami, the top U.N. official in Sudan, said in a statement.