Police have arrested four men over the public killing of a scrap trader outside Mitford Hospital in Old Dhaka, an incident that has sparked widespread outrage and horror after video footage circulated online. Law-enforcing agencies have arrested four people: Mahmudul Hasan Mohin and Tarek Rahman Robin by a joint task force, and two others by RAB. A local electronics trader said Sohag controlled a major syndicate in the used cable trade in the Mitford area. Two others are members of the BNP's student wing Chhatra Dal, while another is a member of the party's volunteer wing Swechhhasebak Dal. BNP central committee member Salahuddin Ahmed announced the expulsion of all five members on Friday through a media statement.