Rapid Action Battalion (RAB) on Monday night arrested three people, including the prime accused, in connection with the killing of former pirate Alauddin of Moheshkhali. The arrestees have been identified as Rafikul Islam Prakash Mamun (28), the prime accused, Md Rifat (23) and Ayub Ali (40). A RAB-15 team arrested Mamun and Rifat around 7pm during a raid in the Faitong area under Lama police station limits in Bandarban, following a tip-off. Also read: Pirate ringleader held in Khulna Alauddin was nabbed later from the Pahartali area of Cox’s Bazar, after Mamun gave information about his whereabouts during interrogation, according to RAB. On November 5, around 8pm some assailants killed Alauddin, 26, the former pirate, in the Chamiraghona Kalur bridge area of Kalamar Chara union in Cox’s Bazar. Also read: ‘Pirate’ killed in Bhola ‘gunfight’ The next day, Alauddin’s brother Sumon Uddin filed a complaint at the Moheshkhali police station. Followed by the complaint, police filed a murder case under penal code 302/34. RAB members claimed to have recovered the guns used in the crime. "Efforts are on to arrest the other accused," an officer said.