Abul Bashar alias Hossen Ali conducted the suicide bomb attack on the Chittagong court premises that killed two and injured many others. The badly injured attacker escaped death after the powerful blast and was identified and held.

The two arrestees, father and brother of Hossen Ali, Mofazzal Hossen and Sona Miah, are farmer and rickshaw van driver.

Hossen Ali, 17, a student of class ten of Nalua Based Khan High School of Sakhipur upazila, joined the Jama'atul Mujahideen Bangladesh (JMB) two years ago, police said.

"Hossen Ali left home on Friday saying that he would go to his sister's house at Dhulutia village in Tangail Sadar upazila. Later, we knew that Hossen Ali was not there," Mofazzal Hossen told Sakhipur police.

"Seeing the picture in the newspaper we thought that he might be Hossen Ali," Sona Miah, brother of Hossen Ali told Sakhipur police.