As they strolled through Westgate Mall , guns strapped to their torsos , the attackers chatted on their cell phones while they sprayed bullets at terrified shoppers . Ruthless and nonchalant , they randomly gunned down shoppers at the upscale mall in the Kenyan capital . At one point , they took turns to pray , removing shoes to perform the ritual washing in a room stacked with boxes . They bowed down in Islamic prayer , taking a break from incessant gunfire . Chilling footage from mall . Closed-circuit television footage obtained by CNN provides the chilling new details of what happened during the attack last month . In part , it shows two people with guns casually walking and shooting their way through a supermarket in the mall . During the hours of video , they are seen talking on the phone , praying and shooting toward anything that moved . Al Libi trial , Libya and al Qaeda : What you wo n't hear in court . A man whimpering in a pool of blood on the floor crawled to get away . A gunman returned and shot him , again . In between the gunfire , the attackers scanned ceilings for surveillance cameras . Nearby , shoppers hid behind cash registers while some ran for their lives . Others , too terrified to move , cowered on bloody floors . Parking lot mayhem . The footage was taken on September 21 , day one of the four-day siege . Though the video has no sound , the terror on the faces of the victims is loud and clear . It 's not over , Somali terrorists say after Westgate . In addition to the two attackers in the supermarket , the footage shows two more making their way through the parking lot . They opened fire . Shoppers slithered under cars . Others tumbled to the ground , felled by bullets . The attack left at least 67 people dead , many more injured and dozens unaccounted for . Details match up . Details from the footage appear to corroborate a running commentary by the Al-Shabaab , which claimed responsibility for the attacks . In its Twitter account during the siege , the terror group said the attacks were conducted by men . It denied reports that terror suspect Briton Samantha Lewthwaite was involved . Bergen : Al-Shabaab backed by money from U.S. Al-Shabaab said it remained in contact with the attackers as they battled Kenyan forces during the hostage crisis . Hostage takers join forces . The attackers in the parking lot later joined the others in the mall . The four wandered , rounding up hostages . A woman with two children and a third in a shopping cart walked by a line of cash registers . A bloody teenage girl followed them ; a gunman pointed the way . The woman , the children and girl were all eventually released . The footage focuses on the corner of the mall closest to the supermarket , which occupies the anchor position in the four-story mall . The stories repeated themselves in various places at the mall , which has more than 80 stores . Many unknowns . There are many mysteries about the mall attack . With dozens still unaccounted for , how many people did the attackers kill ? How many terrorists did the Kenyan forces kill ? How many civilians and terrorists are buried beneath the concrete chunks of the collapsed section of the mall ? It 's unclear whether the four terrorists in the video were arrested or gunned down by security forces at the scene . Even the total number of assailants is unknown . Kenyans debate : Time to get troops out of Somalia ? At the time of the attack , Kenyan officials said that up to 15 gunmen were involved . On day four , as the operation wound down , President Uhuru Kenyatta said five terrorists were killed and 11 suspects were in custody . But since then , the numbers have fluctuated , with different officials citing various numbers between four and six . This month , military spokesman Maj. Emmanuel Chirchir said four gunmen died when part of the mall collapsed . It 's unclear whether he was referring to those in the video . Their charred bodies , he said , are undergoing DNA tests . Chirchir also released the names of the dead militants , including an American of Somali origin , but analysts say those names may be pseudonyms . Officials have said the answers may be buried beneath the rubble of the collapsed section of the mall . But , as they scour through the mangled heap , there are more questions than answers .
Closed-circuit television footage obtained by CNN provides chilling new details . At one point during the attack , the gunmen took turns to pray . They bowed down in Islamic prayer , taking a break from incessant gunfire . The men then returned fire at police officers who were trying to enter the building and eventually killed them all with automatic weapons.