A city court on Wednesday
Chief judge, city sessions court, M Mumtaz Khan granted Hakim's custody to the NIA until November 14, following a prayer by the agency for 15 days' custody so that it can interrogate him in connection with the blast.
The other three arrested in connection with the case -- Hasem Mollah, Rajia Bibi and Alima Bibi -- were remanded to judicial custody till November 20 on a prayer by the NIA counsel.
Hakim was released from the state-run SSKM Hospital on Wednesday after being treated for splinter injuries.The other three were already in judicial custody. Two persons were killed in the accidental blast in a house at Khagragarh in Burdwan district on October 2 while hand grenades were being manufactured there, leading to the unearthing of an international terror racket.