Suspect Masum was arrested from Chandina on Thursday
Police have made a second arrest over the killing of Comilla city councillor Syed Md Sohel and his aide.
Masum, who is named in the case started by the slain councillor's family, was arrested from Comilla’s Chandina area around 1pm on Thursday, confirmed Comilla Additional Superintendent of Police Sohan Sarkar.
On Wednesday, Rapid Action Battalion (RAB) arrested Md Sumon, also named in the case, from Comilla Medical College Hospital.
Earlier the day, Syed Md Rumon, younger brother of ward councillor Sohel who was murdered on Monday, filed the case against 11 named and 10-12 unnamed persons.
Masked gunmen shot the ward councillor and his associate Haripada Das at the councillor's office in Pathuriapara area on Monday.
Sohel, 48, was also the panel mayor of Comilla City Corporation and president of the ward unit of Awami League.
The gunmen stayed around 20 minutes after opening fire on Sohel in his office so that no one could take him to the hospital immediately, said his associates and locals.
The attackers, some wearing masks and some helmets shot others in the leg in and outside the office, indicating that they were professional hitmen, said law enforcers.