The medical aid group Doctors Without Borders says one of its medical facilities located in a rural but violent region of South Sudan has been ransacked and destroyed.

The group said Friday the attack leaves 100,000 people without medical care in South Sudan's Jonglei state.

MSF — as the group is also known — said its hospital infrastructure was systematically damaged in last weekend's attack. The hospital is the only facility in Pibor Country. The nearest alternative facility is 90 miles (145 kilometers) away.

MSF did not blame a group for the attack. It noted that the facility has treated government soldiers and that region suffers from a conflict between government troops and an anti-government militia led by David Yau Yau. The government accuses Sudan of arming Yau Yau's rebellion.