Kenyan authorities investigate local role in Nairobi attack

Officials have released few details about the five-man assault team that carried out Tuesday's siege at the dusitD2 hotel complex, an attack that killed 21 people and was claimed by al Shabaab, a Somalia-based al Qaeda affiliate.How did he get to where he is?" said a private security official in Kenya, who asked not to be identified for operational reasons."If al Shabaab can replicate this model, then there is a fundamental problem."All five assailants were killed in Tuesday's attack, the countr