Police arrested a local Jamaat leader from an abandoned petrol pump in Noymail area on Bogra-Dhaka highway under Shajahanpur upazila yesterday morning.
The arrestee is Arshadul Bari Arshad, 42, joint secretary of the Bogra unit Jamaat-backed labours' organisation Sramik Kalyan Federation.
Arshad, also the former counsellor of ward No 8 under Bogra municipality area, was the mastermind of the violent incident took place in the town on March 3 last year, said police.
The arrestee is accused in 21 cases including two for murder, said assistant superintendent of police Gaziur Rahman.