Haider Ali and his associates were members of SIMI that had been recruiting boys from Ranchi and other places.
An NIA officer said they have already contacted service providers in India as well as abroad.
Bangalore police had obtained a copy of the FIR in the case before pressing charges against Mehdi.
‘Areeb has mentioned to interrogators that he followed many pro-IS Twitter and Facebook accounts’
Money, most agreed, would not have been a factor behind the four joining the Islamic State.
Areeb was arrested on the day of his return to India and has been in the NIA’s custody since then.
What NIA and other agencies have so far unearthed on the Burdwan ‘terror funding’.
The court denied permission of taking the 26 accused to Kerala saying it could be a risky affair.
Investigations revealed that the three boys later learned that Areeb was alive but did not inform his or their own families about his well being.
Amit Shah alleged that CM Mamata Banerjee was blocking NIA probe to save accused TMC leaders accused in Saradha scam.
The train was at Kendukana railway station near Rangia at the time.
They had escaped from Khandwa jail in MP; probe into Sept Bijnor blast links five of them to crimes across country.
The seized documents also allegedly include jihadi literature pertaining to the Islamic State.
Sahanur Alom,33, has remained untraced soon after the Burdwan blast occurred on October 2.
The NIA had recently achieved significant breakthroughs with the arrests of JMB’s Burdwan commander Sheikh Rehmatullah alias Sajid.