back back of the head and moved on. >> reporter: yes, it's interesting. people here are linking the two attacks in lots of ways. four gunmen are thought to be responsible for the west gate shopping mall attack two years ago and four gunmen for this one. west gate appeared to be more indiscriminate. this one started with indiscriminate gunfire. clearly first aim was to kill as many people as possible and then they began singling out christians. some people some christians tried to pretend to be muslim. the gunmen asked them to recite the main muslim holy prayer. if they couldn't they were shot in the head. one other thing, joe and mika just to point out there is a bit of an inyou'rery going on here because there was clear intelligence that something was going to happen. the university of nairobi here posted a notice at its university a week ago saying that terrorists are planning to