The investigators have also noted that instead of using RDX, the bombers used other plastic explosives with extra detonators that could be switched off if they wished to abort their mission. The timers of the two suitcase bombs that did not go off were connected to their central locking systems and were meant to trigger blasts in the early hours of Monday just before the train reached Ambala, where it has an operational halt. The bombers, for some reason, switched it off, aborting the original plan of setting fire to some more coaches.
Unlike in the 1993 Bombay blasts, where timers and detonators could be clearly traced back to the Pakistani military, this attack left no trail. But officials say the sophistication of the circuits and detonators is beyond the known capabilities of ordinary terror operatives. Intelligence officials also rule out fidayeen involvement. "We feel the bombers planted the bombs and then got off the train at Old Delhi," says a source.
The timing had purpose writ large over it. The blast came days before the Indo-Pak joint commission on terror met. Pakistan foreign minister Khurshid Mahmud Kasuri was to make a tone-setting visit to India. Kasuri had plans—to give impetus to the peace process, he had proposed to bring together Mirwaiz Umer Farooq, Yasin Malik and Syed Ali Shah Geelani with a plan on Kashmir acceptable to both India and Pakistan. This, say sources, further enraged hardline elements within the ISI. The attack was designed to anger Pakistani citizens and limit further concessions on Kashmir.
The suspected hand of 'rogue ISI' will figure prominently in the talks between RAW chief Ashok Chaturvedi and his British counterpart John Scarlett, now in India. Sources say Scarlett will share information about an ISI group unofficially helping the Taliban in Afghanistan. The British are said to have offered greater access to intelligence on the ISI to help the investigations into the Samjhauta Express blasts.
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