The Rapid Action Battalion (RAB) detained Md Shahadat Hossain, owner of the Jabal-e-Noor bus, over the killing of two college students on Ariport Road in the city on Sunday.
Mufti Mahmud Khan, director of the media and legal wing of the elite force, confirmed the matter on Wednesday.
More information about the arrestee will be revealed through a press release later, he added.