“The preliminary forensic analysis has confirmed that the two bombs were made of L-shaped iron pipes, a mixture of ammonium nitrate and potassium chlorate as charge, an electrical detonator using 9 volt Chinese made GP super battery and an analogue clock timer using 1.5 volt Nippo cell just as in the Patna blasts. The IEDs were hidden in a backpack and placed in two adjacent compartments. There is a strong possibility that the bombs were intended to go off on a running train,” a counter terror official said.
While the security agencies are also investigating the hand of Tamil Nadu-based Al Ummah terror group, the bomb design indicates that Haider Ali — the leader of the module — could be involved in the attack.
Haider is known to be the bomb maker of the group and is on the run with the other three members — Noman, Toufiq and Mujibullah — of the module.
“It is still not clear as to how many bombers were there, but the bombs are from the same Patna stock. They were not meant for large-scale destruction but were intended to send out a message to the northeast community that ill-treatment of Rohingya Muslims in Myanmar and Bodo attacks on Muslims in Assam are priority issues for SIMI,” an MHA official said.
SIMI has kept a distance from IM terrorists but their focus, apart from the two concerns listed above, is the rise of Modi.