New footage reveals horror of Kenya mall massacre Dramatic new footage has emerged of the moment killer gunmen brought terror to the Westgate shopping mall in Nairobi. Kenya initially thought up to 15 attackers were involved but just four in total appear on the CCTV pictures. British media reports from the BBC suggest that one of them is Hassan Abdi Dhuhulow, a 23-year-old Norwegian citizen of Somali origin. Somali Islamic militant group al Shabaab says it was behind last month's attack in which at least 67 people died. The security camera footage shows the gunmen stalking the mall for victims, shoppers fleeing for their lives and the tragic consequences for those who fail to escape. Reports on Thursday suggested that more body parts had been recovered from the collapsed section of the mall. Security forces brought the assault by the al Qaeda -linked group to an end but only after four days of bloodshed. At least eight people have been detained by Kenyan authorities in connection with the attack.