Over 50 civilians have been killed by the Sudanese army in the Nuba Mountains in the state of Southern Kordofan, said a spokesman for the Sudan People’s Liberation Movement, an opposition group.
Spokesman Qamar Delman said members of Sudan’s armed forces bombed Abu Gabeiha, a civilian area. The Sudan People’s Liberation Movement is allied with the government of South Sudan, which gained independence July 9.
Southern Kordofan is Sudan’s main oil-producing state, and Sudan’s government has been trying to disarm fighters there and in Blue Nile state who fought alongside South Sudan’s forces during the two-decade civil war.
Southern Kordofan accounts for 115,000 barrels of oil a day, according to the energy ministry. South Sudan assumed control of 75 percent of the country’s former daily crude output of 490,000 barrels a day.
Earlier this month, clashes erupted in flashpoint Southern border state, forcing thousands of people to flee their homes.
United Nations Secretary-General Ban Ki-moon and the United States President Barack Obama have called for an immediate ceasefire in the north-run oil state, where humanitarian groups fear a mounting death toll.