Media playback is unsupported on your device

Westgate attack: BBC uncovers new evidence

3 October 2013 Last updated at 15:43 BST

A BBC investigation has uncovered evidence of a breakdown in control when the military entered the Westgate mall, Nairobi, during an attack by al-Shabab militants.

Meanwhile, a leaked security document has revealed the group behind the attack recruited members not just abroad, but from within Kenya itself.

Karen Allen reports from Nairobi.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.