In Somalia, at least 11 people have been killed and six others injured in a double suicide attack on an African Union peacekeepers' base in the capital Mogadishu. Officials said among the dead is the deputy commander of the African Union force in Somalia, along with four bombers. A security official said two white vehicles with UN logos, but packed with explosives, drove into the base and exploded. Islamist insurgents al-Shabab group said the attacks were revenge for a US raid on Monday. The raid reportedly killed Kenyan-born al-Qaeda suspect Saleh Ali Saleh Nabhan, who was wanted by the US for attacks in Kenya. There are some 5,000 AU troops, mostly from Uganda and Burundi, in Mogadishu, protecting the weak, UN-backed government.