Abu Siddik Sohel, an activist of banned Islamist outfit Ansar Al Islam, was shown arrested and placed on a four-day remand yesterday in a case filed over the killing of publisher Faisal Arefin Dipan in 2015.
Additional Chief Metropolitan Magistrate Md Aminul Haque passed the order after Inspector Fazlur Rahman, also the investigation officer, submitted a petition for showing Sohel arrested in the case and sought a seven-day remand.
In yesterday's remand prayer, the IO said Sohel was directly involved in Dipan's killing and he needs to be remanded so whereabouts of other people responsible for the killing could be known.
Dipan, 43, publisher of Jagriti Prokashoni, was hacked to death inside his office on the second floor of Aziz Cooperative Super Market in the capital's Shahbagh on October 31, 2015.
Later, his wife Razia Rahman filed the case accusing unknown persons.
In a confessional statement given before a magistrate on November 6, Sohel said he and seven others participated in the killing of blogger Avijit Roy, a Bangladesh-born US citizen who was hacked to death on Dhaka University campus as he along with his wife Rafida Ahmed Bonya was returning from the Ekushey book fair on that day in 2015.
Ansar Al Islam is said to be the Bangladesh chapter of al-Qaeda in Indian Subcontinent (AQIS).
Detectives have so far arrested three members of banned Ansarullah Bangla Team -- Moinul Hasan Shamim alias Sifat alias Samir alias Imran, Abdus Samad alias Abdus Sabur and Khairul Islam in the Dipan murder case. They confessed to the killing before magistrates on different dates.