Union Home Ministry sources said Madhya Pradesh government has been asked to handover the case to NIA, which has been probing other terror cases related to alleged conspiracy to target political leadership of the country.
The sources said once the case is transferred to the NIA, the agency would be carry out overseas investigations in the case as the four -- Imran Khan, Waseem, Rizwan and Anwar Qureshi -- were allegedly being motivated by Yousuf-Al Hindi, who is the face of ISIS for India and Bangladesh.
Shafi, a master in computer technology, is not a new name for the central security agencies as he was allegedly instrumental in brainwashing youths from Rajasthan under the banner of Indian Mujahideen.
Sources claimed that cyber evidence, gathered over a period of time by central security agencies and Anti-Terrorist Squad of Madhya Pradesh Police, showed that the four were being persuaded by Yousuf for carrying out terror strikes.
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During interrogation, sources claimed, the four had confessed to planning to carry out at least a couple of sensational attacks to mark the presence of ISIS in India.
The questioning of the four as also cyber evidence collected by the security agencies indicate that Shafi has taken over the operations of ISIS in India and Bangladesh after the death of his brother Sultan.
Under instructions from Shafi, the four youths hailing from Ratlam area of Madhya Pradesh, had procured two pistols and were being guided for fabricating Improvised Explosive Devices (IEDs) from locally available explosives.