MOGADISHU, Somalia (AP) -- Mogadishu's dominant clan said Sunday it has brokered a truce with Ethiopian military officials who are supporting Somalia's government, even as mortar shells continued slamming into the capital for a fourth day. Ahmed Diriye, the Hawiye clan spokesman, said fighting in Mogadishu should end within hours. Ethiopian officials were not immediately available for comment. Somali government troops and their Ethiopian allies have been waging a fierce offensive since Thursday to wipe out Islamic insurgents, sparking some of the heaviest fighting in 15 years in the capital. Untold numbers of civilians have been killed and hundreds wounded....