Nasir Abdul Kadar Keval alias Nasir Dhakla, who is serving a life sentence, had challenged the order of DIG (Prisons) in July 2012 transferring him to Nashik.
According to the authorities, it was necessitated by administrative as well as security reasons, as Dhakla and some other inmates had got into a fight inside Nashik prison.
Dhakla's petition said no inquiry was ever conducted to verify the allegation that he had got into a fight.
Nasir, according to the CBI, had attended conspiracy meetings in Pakistan before the blasts, and was present at the Shekadi coast in Raigad during the landing of RDX.