The U.N. says gunmen opened fire on a convoy in South Darfur, wounding seven Pakistani police officers serving with the African Union-United Nations peacekeeping force.
U.N. Secretary-General Ban Ki-moon called on Sudan's government Wednesday to launch an immediate investigation.
The joint peacekeeping mission said a five-vehicle police convoy was ambushed Tuesday outside Nyala, the capital of South Darfur, as it was returning from a patrol near the El-Sherif camp for internally displaced people.
One critically injured police officer was airlifted to the capital, Khartoum, and three others were in serious condition at the mission's hospital in Nyala.