brits have been pretty lucky so far. >> certainly you have both heard from british officials that they have hundreds of these guys that have come back and as isis gets pressured in iraq and syria, more of them are coming back and they're very particularly worried about them in places and concentrating in places like manchester and midlands and london because that's where there's a support network. >> and no one is off limits. scle clearly the target was womenen and children. >> it's pam's reporting that they have an idea on who they believe to be the suicide bomber. they're now i imagine looking at his connections. walk us through what the law enforcement process is now. >> you've guatemala enforcement intelligence. the first tear is are there co consphe conspirators. the question is are there