When gunmen stormed Nairobi's Westgate shopping mall last week, a group of security officers and armed civilians volunteered to go in and rescue as many people as possible.

Amid a hail of gunfire and grenades, businessman and licensed gun-holder Abdulkadir Haji joined them to search for his brother.

Upon entering, they quickly discovered the horror.

(SOUNDBITE) (English) ABDULKADIR HAJI, MAN LICENSED TO CARRY A GUN WHO WENT INTO WESTGATE SHOPPING MALL AFTER IT WAS ATTACKED TO GO AND RESCUE CIVILIANS TRAPPED THERE SAYING:

"This people are here to cause havoc, they are barbaric, because I saw young kids who were shot, I saw young girls, I saw some elderly women who were shot and this was a shock for me. I had seen dead people before, you know in funerals in a road accident but I had never seen this kind of massacre."

The four-day assault left at least 67 civilians and members of security forces dead. Five militants of the Islamist Al Shabaab group were also