"Gunmen attacked an Ethiopian base in the former ministry of defence building. They fired mortar shells and machine guns and the Ethiopians responded," Ali Nur Said, a witness, said on Friday.
Two other people were killed in northern Mogadishu's Sanaa area by a long range shell, spreading panic in the area that had been spared in the recent days, said Abdulahi Shegow.
Three others died near the capital's main Bakara market, including a woman and an old man killed by stray bullets, witnesses said.
A Ugandan delegation in
The country is awaiting the deployment of an African Union (AU) force of 8,000 troops, approved on Tuesday by the UN Security Council.
The force will seek to help the transitional government - supported by many of the clan commanders whose rival militias carved up
But the AU has so far managed to raise only half of the required peacekeepers, with possible troop pledges from