At least three people were killed on Monday in a double car bomb attack here in the Somalian capital, security officials said.The assailants detonated two car bombs at a security checkpoint near the Hotel Peace, leaving three police officials dead and injuring another three civilians, local police told Efe news.The Somali terror group al-Shabaab claimed the attack.Located near the Halane base, host to UN and African Union (AU) personnel, Hotel Peace is frequented by diplomats and government officials. Local resident Nasteho Ibrahim, who lives near the scene of the explosions, told Xinhua news agency the blasts were huge."The blasts were very heavy and we could feel the impact from our houses shaking," he added.