Investigative officials came to the conclusion after they found fragments of a mobile phone that contained traces of explosives in the blast site, sources claimed. They have also confirmed, contrary to earlier reports that the material used in the explosives was not ammonium nitrate but either RDX or PETN.
With the mobile phone lead yet to be verified, the new input is likely to take investigation into a whole new direction. The fact that a cellphone trigger is typical of a Lashkar-e-Toiba operation. Such a trigger was used earlier at Baramulla, north Kashmir couple of years ago to detonate an Improvised Explosive Device.
With the four terror emails coming in close succession also confusing investigators, the probe on that front has also hit a dead end. With the mail traced to a college student in Kishtwar, Jammu and the cyber cafe owner haven't been able to give any tangible proof on their involvement in the Sept 7 attacks. There are doubts that the mails could have been a diversionary tactic to derail the probe.