Somali government security forces stand guard at the restaurant where twin explosion targeted in Mogadishu on March 1, 2013. Seven people were injured, two of them seriously on Friday after twin bomb attacks targeted a popular beachfront eatery in the Somali capital Mogadishu, government official and witnesses said. (Xinhua/Faisal Isse)

A government investigator collects evidence at the site of the twin exploison in Mogadishu, Somalia on March 1, 2013. Seven people were injured, two of them seriously on Friday after twin bomb attacks targeted a popular beachfront eatery in the Somali capital Mogadishu, government official and witnesses said. (Xinhua/Faisal Isse)

Somali government security forces stand guard at the restaurant where twin explosion targeted in Mogadishu on March 1, 2013. Seven people were injured, two of them seriously on Friday after twin bomb attacks targeted a popular beachfront eatery in the Somali capital Mogadishu, government official and witnesses said. (Xinhua/Faisal Isse)

Somali government security forces stand guard at the restaurant where twin explosion targeted in Mogadishu on March 1, 2013. Seven people were injured, two of them seriously on Friday after twin bomb attacks targeted a popular beachfront eatery in the Somali capital Mogadishu, government official and witnesses said. (Xinhua/Faisal Isse)

Somali government security forces stand guard at the restaurant where twin explosion targeted in Mogadishu, Somalia on March 1, 2013. Seven people were injured, two of them seriously on Friday after twin bomb attacks targeted a popular beachfront eatery in the Somali capital Mogadishu, government official and witnesses said. (Xinhua/Faisal Isse)

Photo taken on March 1, 2013 shows the site where twin explosion targeted in Mogadishu, Somalia. Seven people were injured, two of them seriously on Friday after twin bomb attacks targeted a popular beachfront eatery in the Somali capital Mogadishu, government official and witnesses said. (Xinhua/Faisal Isse)