Five peacekeepers from a U.N.-African Union force were killed and 17 others remain missing after their patrol was ambushed in northern Darfur, AP quoted Sudan's official news agency as saying Wednesday. The SUNA agency quoted an unidentified official from the joint force as saying the peacekeepers were attacked Tuesday by a huge convoy of gunmen riding in 40 sport utility vehicles. Another 18 peacekeepers were wounded, and ten U.N.-AU vehicles were destroyed, the report said. Among those killed, three were from Rwanda, one from Ghana and one from Uganda, SUNA said. It did not give details about the gunmen.