The seven killed by peacekeepers are Tanzanians . The African Union-U.N . U.N. Secretary - General Ban Ki - moon expressed outrage . This is third in three weeks on African Union - United Nations Hybrid Operation in Somalia .
The seven killed by peacekeepers are Tanzanians . U.N. Secretary - General Ban Ki - moon expressed outrage . This is third in three weeks on African Union - United Nations Hybrid Operation in Somalia .