Nazrul's wife Selina Islam Beauty filed a case against six people, including vice-president of Siddhirganj Awami League and Councillor[5] Nur Hossain, while Chandan's son-in-law Bijoy Kumar Paul filed the other case against Nazmul Haque partner of an engineering firm and some unknown people.
CID was given the charge to investigate the case as per the directive of the High Court while the government assigned Detective Branch of Police with the task.
[7] More than a year later, on 4 June 2015, the High Court directed RAB, the government's seven-member probe committee, the inspector general of police and the CID to submit progress reports on their investigations.
[8] Shahidul claimed some labourers saw RAB men and Nur Hossain, Nazmul Haque and some more civil abduct Nazrul near Shibu Market in Narayanganj on 27 April.
Nur Hossain, the prime accused in the case who fled to India after the murders took place, was arrested in Kolkata on 14 June 2015.