Kenya Westgate mall attack: What we know
21 October 2013 Last updated at 23:09 BST
At least 67 people died when suspected al-Shabab militants stormed Nairobi's Westgate shopping centre on 21 September.
Eyewitness accounts and CCTV footage have helped piece together a picture of what happened.
A month on, the BBC's Will Ross reports from Kenya on what we know.