The suspects were arrested in Patna in connection with Hunkar Rally blast case which occurred in Gandhi Maidan in Patna on October 2013.
The city police who are probing all angles, are now zeroing in on the IM module and obtained the warrant for the two suspects and extracting possible leads from them.
The police have analysed the CCTV footage, call record details and other circumstantial evidence obtained from the scene of crime, which could not yield any positive results.
Several special teams have been formed and dispatched to various places across the country for the lookout of possible leads.
Additional Commissioner of Police, (Law and order) Alok Kumar, said that the police have not received any concrete information on the perpetrators of the blast, but investigations are on.
A senior police officer who is part of the Church Street blast investigations, said that the two IM suspects are being brought here and they maybe able to give some leads for further investigations.