Thirty five unknown persons have been sued in connection with the killing of an Ansar member who was gunned down allegedly by robbers inside Rohingya refugee camp in Teknaf upazila of Cox's Bazar.

Alamgir Hossain, an Ansar member of the barrack, filed the case with Teknaf police station last night, said SM Azimuddin, deputy director of Bangladesh Ansar (Chittagong zone).

However, no one was arrested in connection with the incident.

Ansar member Ali Hossain, 55, was shot dead and 11 firearms were looted during the attack around 2:00am yesterday.