Chattogram, Nov. 7 -- Police have arrested four people in connection with the murder of a BNP activist in Chattogram's Raozan upazila last month.

The arrestees are Abdullah Khokon alias Langra Khokon, Md. Maruf, Saqlain Hossain, and Ziaur Rahman. Among them, Saqlain Hossain has been shown arrested in a separate case filed under the Arms Control Act.

Chattogram District Police Superintendent Md. Saiful Islam Santu told the media on Thursday that the murder was planned to gain control over sand mining along the Karnaphuli River and to establish local dominance over the Balumohal (sand mining area).

"So far, four people, including the mastermind behind the killing, have been arrested," the SP added.

According to police, on October 7, bus...