Ansar Al Islam, a banned militant outfit, might be behind the murder of free-thinking writer-publisher Shahjahan Bachchu, Counter Terrorism and Transnational Crime (CTTC) unit Chief Monirul Islam says.

Examination of the 11 evidence, which were collected from the crime scene of blogger Avijit murder and sent to the Federal Bureau of Investigation (FBI), have been completed, Additional Commissioner Monirul Islam of Dhaka Metropolitan Police (DMP) said today.