The Nairobi mall carnage in which several foreigners were killed by Islamist fighters was a \"message to Westerners\" who supported Kenya, Somalia\'s Shebab chief said in an audio message. Reclusive rebel supremo Ahmed Abdi Godani said that the four-day bloodbath warned Westerners who \"backed Kenya\'s invasion (of Somalia) that has spilled the blood of the Muslims for the interest of their oil companies\".