 Now the African Union's peacekeeping mission in Somalia says it is investigating reports that civilians were killed during a gunfight between the mission's troops and al-Qaeda-linked al-Shubab fighters. Dozens of people protested outside of Magadishu Hospital, where the remains of victims had been brought, volunteered to fight the African Union mission in Somalia known as AMISAM. Now AMISAM said the incident occurred on Tuesday following an ambush while its soldiers were in patrol along the Bellderman-Golwenford Operating Base in the Lower Shabelle region. It said there was a heavy exchange of gunfire between AMISAM forces and al-Shubab militants before the patrol team seized firearms, rounds of ammunition and mobile phones.