This screen grab released on October 18, 2013 and taken from closed circuit television shows people crawling on the ground during the attack at the Westgate Mall on September 21, 2013.
Terror at the Mall, an HBO film based on the true events that happened on September 21, 2013, at the Westgate Mall, Nairobi, chronicles the tragic day when four Somali gunmen stormed the mall in the morning rush hour and went on a killing spree, leaving 67 people dead.
The ensuing stand-off with security personnel lasted 49 hours.
