Hmm, both your article and RCW2001's post 7 are from the Israeli press using the mothers of the suspects as their best source of information.
This thread Mystery Solved... The Five Jewish Kids In the White Van has some U.S. press articles quoting police spokesmen. See my posts 7 and 12 in particular.
I believe Israeli tourist/movers from Urban Moving Systems were seen celebrating the WTC disaster from three locations in NJ during the course of that day: Liberty State Park, Union City, and their Weehawken warehouse.