Waagacusub.com- African Union peacekeepers shot dead at least four civilians after a bomb blast targeted their military convoy in the north of the Somali capital on early Tuesday, officials and a resident said, in an attack condemned by the Somali government as 'deplorable'. Somali officials are accusing African Union peacekeepers of killing the civilians after a land bomb blast struck an AU convoy in Heliwa district, and called for the African Union to launch an investigation into the incident, one of several shooting cases involving AU forces in the immediate aftermath of bomb attacks in recent years. "The government of Somalia is aware of the deplorable incident involving African Union forces in which several civilians were hurt." said a statement by Somalia's information ministry. Investigations into the incident, a major test in the relations between African Union forces and the Somali government are already underway, the statement noted.