At least seven people were killed and three others injured when an unidentified armed group attacked a police station in Sudan's East Darfur State, Khartoum's Al Sahafa daily reported Saturday.

"An unidentified armed group attacked a police station at Kilaikila area in East Darfur State with the aim to steal basic school examinations. The attack resulted in the killing of six policemen and a civilian woman, and the wounding of three others," the paper quoted Abdul-Jabar Abdalla, the area's representative in the Sudanese parliament, as saying.

Violence has mounted in Sudan's Darfur region during the past months which pushed the United Nations-African Union Mission in Darfur (UNAMID) to urge the conflicting parties to avoid whatever may threaten the peace in the restive region.

Early this month, Sudan's South Darfur State witnessed tribal clashes between Al-Gimir and Bani Halba tribes which resulted in the death of many people.

Similar clashes also recently took place in Sudan's North Darfur State between Bani Hussein and Rizaigat tribes leaving tens of people dead from both sides which pushed the state government to intervene to contain the situation.