It may take a bit more time to submit the charge sheet of Avijit Roy murder case, Counter Terrorism and Transnational Crime unit (CTTC) Chief Monirul Islam today said.

“Our investigation found that nine people including sacked army Major Syed Ziaul Haque were directly involved with this murder,” Monirul Islam said while talking to journalists at his Mintoo Road office.

Three of them have been arrested so far and all of them have confessed to their direct involvement in the case, Monirul said.

Another suspect in the Avijit murder named Saleh alias Arif alias Hadi was killed in a “gunfight” with law enforcers in the city's Khilgaon area on June 19, 2016.

Police are yet to arrest the other five convicts.

“Once we manage to arrest the five, the charge sheet will be placed before the court,” he said.

If the law enforcers fail to arrest the five immediately, we will place the charge sheet before the court along with the evidence we have at present, he added.

Avijit, founder of Mukto-Mona blog, was hacked to death by militants near the Teacher-Student Centre on the Dhaka University campus on February 26, 2015.

His wife Rafida Ahmed Bonya was also injured in the attack. Victim's father Ajay Roy filed the murder case against unidentified assailants with Shahbagh Police Station. Detective Branch of police was in charge of investigation first but it later shifted to CTTC in December last year.