terror group this was, if it was a group or lone offender. number one priority right now, determining were there any accomplices to this. that doesn t just mean someone working directly with this attacker, but whether or not this attacker was inspired or directed by some other type of extremist group. as far as the investigation, what needs to happen before anything can be reopened? first of all, london bridge. the ira bombed it in 1992. you and i sat on set one weekend together, june 3, 2017 there was a terror attack that had marked similarities to this one. it was a vehicle attack, this one doesn t appear to have been a vehicle attack, but a knife was used, an edged weapon and a hoax bomb vest, the suicide bomb vest. right now authority also have to keep significant portion of that bridge closed. they ll have to do everything they can to harvest as much forensic evidence as they can. and then this is the 21st