Five Islamic extremists attacked a leading hotel in the Somali capital of Mogadishu at dawn Sunday, killing at least six people and injuring 10, before all the assailants were killed by security forces. The attack started at daybreak when a suicide bomber detonated an explosives-laden vehicle at the hotel’s entrance gate and then four men, armed with AK-47 rifles, grenades and suicide vests, invaded the premises. Some of them went into rooms to kill residents while others went to the hotel’s rooftop to fight off government soldiers who came to battle them, said Capt.