Foyzur Rahman Faizul, who stabbed noted writer Dr Zafar Iqbal, believed in militancy and religious extremism.
Lt Col Ali Haidar Azad Ahmed, commanding officer of Rapid Action Battalion 9, said this while addressing a press briefing in Sylhet on Sunday.
He also said they would hand over the attacker to police in the evening.
Also Read - ‘I attacked Zafar Iqbal because he is an enemy of Islam’
Earlier, Faizul, a local hawker who also claimed to be a madrasa student, confessed that he deems the professor an enemy of Islam.
“During a primary interrogation, Faizul told us that he attacked Prof Zafar Iqbal because the professor was an enemy of Islam,” Lt Col Haidar told reporters on Saturday night.
On Saturday afternoon, Faizul swooped on and attacked Prof Zafar Iqbal in a ceremony on the Shahjalal University of Science and Technology campus in Sylhet.
He was taken to Sylhet MAG Osmani Medical College and then flown to Combined Military Hospital in Dhaka.
Also Read - Is Zafar Iqbal a victim of a militant attack?
Consultant Surgeon General Maj Gen Munshi Muhammad Mujibur Rahman of Combined Military Hospital said: “Zafar Iqbal has suffered six wounds – four in the neck and one each in the back and left arm. The wounds are all flesh wounds, and are not severe.”
A medical team cleaned the wounds to prevent any infection and Prof Zafar's condition is now stable, he added.