Police arrested Mobarak Hossain, also known as David Iman, described as the second-ranking figure in Chattogram's alleged Sajjad gang, at a checkpoint in Jhunjhumpur under Jessore Kotwali police station around 3 a.m. on Tuesday night. Three associates, Alis Tamal, Shafayat and Shamim, were also detained and later shown arrested. Jessore Superintendent of Police Syed Rafiqul Islam said detectives acted on secret information and handed Iman over to Chattogram police.

At roughly the same time, police launched a separate operation in Noakhali to arrest Rayhan Alam, described as the gang's killing squad chief, but he narrowly escaped. Chattogram district police superintendent Masud Alam said Rayhan remained under surveillance and expressed hope that he would be arrested soon. Police say Iman and Rayhan had jointly run the group's activities after the arrest of “Small Sajjad.”

Police and case records link Iman and Rayhan to allegations involving multiple killings, extortion and weapons-law cases, though the allegations have not been proven in court. Police sources said efforts to arrest Iman intensified after an allegation that he demanded extortion from a Chattogram businessman. He may be questioned in Chattogram in related cases, while police are examining the roles of his three associates. Sajjad Ali Khan denied involvement, saying a group was extorting people using his name.