New arrivals at refugee camps in south Darfur say they were forced to flee their homes due to government helicopter gunships attacking villages in the south of the region last week.
The accusations follow a Sudanese Liberation Army (SLA) statement that the Sudanese government carried out bombing attacks in Jebel Marra last Friday.
Khartoum has not confirmed the attacks. The non-governmental organization Human Rights Watch has previously accused Sudan of carrying out these types of aerial assaults.
The new refugee camp arrivals are saying that the attacks on the villages took place on Thursday and Friday of last week between the southern towns of Buram and Radam.
In one camp to the north of Nyala five trucks arrived carrying up to 600 people between them.
Fatimah travelled for two days in one of the trucks with her two young children, leaving her husband behind. "We had to leave quickly. We saw the helicopters then saw them attacking one of the nearby villages," she said. "They were firing at the villagers as they ran away. My husband told me to get the children and leave, so I did.
"Others in the village stayed but I have not heard anything of what happened to them."
Since May fighting in Darfur has escalated, with growing hostilities between rebel groups, the government supporting the Janjaweed, and the Sudanese armed forces attempting to secure territories—before a peace agreement was secured at the end of the year.
Attacks on aid workers in the region have also risen, forcing many organizations to shut down operations. In Gereida, in west Darfur, aid agencies were forced to leave for security reasons, evacuating 71 workers, leaving approximately 120,000 displaced people receiving only minimal medical aid and food supplies.
One Sudanese aid agency worker in Nyala said the intense fighting had meant a dramatic influx of displaced people entering the camps.
"Over the last couple of months we have been taking in thousands of people but the last few weeks have been exceptional. We have had to make special efforts to deal with the increased numbers.
"There has been a number of stories of the government attacking villages from the people coming in. But we are also being told the fighting between rebel groups and the government has meant people are forced to flee for safety," he said.
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