Dhaka, Dec. 28 -- Police have recovered two improvised explosive devices (IEDs), five electric bomb-like devices, and a large quantity of bomb-making materials from the madrasa that was levelled in an explosion in Hasnabad, Keraniganj.

In court, police said the madrasa's head Sheikh Al Amin had stayed up all night making bombs before the explosion.

In the case filed at midnight on Saturday, police reported the recovery of different bomb-making materials and bombs.

Six of seven people named in the case have been arrested, while the key suspect Al Amin remains at large, police said.

At the remand hearing, the case's investigating officer referred to the suspects as "militants" in court.

However, the Dhaka District Police has not made a...