know. the license plate on the car came from a connecticut junkyard. there's been no claim of responsibility thus far. mary snow is in times square, mary, what is being said this many hours now after the event? >> well, fredericka, as you mentioned, we're anticipating some answers very shortly from the nypd and the fbi at the official briefing. throughout the day, investigators have been looking for clues combing over evidence. at one forensics lab, that suv was taken to that lab and that is being looked at for all kinds of things. and at a separate lab, those devices are being combed over, the propane tanks, gasoline containers, as up mentioned, the locked metal box. one big question is going to be have investigators been able to get into the box and see what exactly was inside it. another thing that is being looked at is surveillance tapes. we already know from the police