At least 12 civilians are killed when al Shabaab militants launch twin attacks against African peacekeepers and government vehicles Monday.<br/> <br />It's the first major attack since al Shabaab's vowed to avenge the killing of its leader by U.S. airstrikes last week.<br/> <br />(SOUNDBITE) (Somali) GOVERNOR OF LOWER SHABELLE REGION, ABDIKADIR MOHAMED SIDII, SAYING:<br/> <br />"More than 12 civilians have been killed. Twenty-eight people were also wounded by the suicide attackers."<br/> <br />Al Shabaab, which wants to impose its strict version of Islam on Somalia, appointed a new leader over the weekend.
