address in new jersey but as recently as two days before the attack he was testing out explosive dwiesz, what looked like cylindrical device, filming on cell phone and another one in the back yard seen in the frame of cell phone video laughing when he made the tests raising questions if someone should have seen him. fbi reveelg he was on the radar two years ago and questions about terror involvement dismissed at the time interviewed the father of the suspect in 2015 after domestic dispute. father then downplayed accusation and fbi concluded it was a domestic matter. today the suspect's father told cnn more. >> now say he's a terrorist. >> why did you call the fbi. >> he doing bad. >> what did he do. >> stabbed my son. hit my wife, and i put him into n jail two years ago. >> investigators now attempting to question the suspect although police say he still isn't talking. one urgent question. did he have help carrying out the alleged attacks. >> down he acted alone? >> it's early on in the investigation. as we move through this, going to determine who the acquai acquaintances were and fami

we'll be able to determine whether there's -- similarities between the potential dwiesz.he first part. second is getting to what we know and don't know. there's a series of circumstances that are occurring over new jersey maybe and new york of course tonight. a bunch of people who know are charged with coming u.s. on the telling us what in fact they know at that stage. obviously people want to call this terrorism already. what we know is both the mayor and new york counterterrorism center tweeted this out, there is no evidence of a terrorist connection. we can parse words as much as we want but from what they're saying we can't say we now know we're under attack. that's not the case. explosions happen. people cause intentional attacks, motivations vary. as your analyst, i sit back and interpret all of this, what may seem obvious to viewers right now may end up being true, but that's not my job. i've been in those situations, people communicating are communicating these words for a reason. they may have physical or photo evidence of the person or people involved. and so i'

address in new jersey but as recently as two days before the attack he was testing out explosive dwieszvice, filming on cell phone and another one in the back yard seen in the frame of cell phone video