New fighting in the Somali capital, Mogadishu, has killed at least 11 people.
In one incident, Islamist insurgents fired mortars at an African Union peacekeepers' base Wednesday, prompting soldiers to respond. Witnesses say at least seven civilians were killed and several others injured.
In another incident, a clash between police and government soldiers at the Mogadishu police academy killed at least four people, including three soldiers and one policeman. Reports say the clash began when police tried to take a gun from a solider.
Mogadishu has endured years of violence since the fall of Somalia's last stable government in 1991.
Thousands of residents have fled the city this week, ahead of an expected new round of fighting between the transitional government and the insurgents.
The government has promised an offensive against the Islamists, who control large portions of the capital.