Police arrested top criminal Md Menko in connection with the cases for robbery, extortion and land grabbing early yesterday.
Detective Branch (DB) police raided Thanthania area in the town at around 2:00am and arrested Menko, also the main accused in a double-murder case.
DB police sources said they arrested Menko in six cases filed with Bogra Sadar and Shajahanpur police stations.
Though Menko is the prime accused in the case for killing Moznu Pramanik and his nephew Nahid Pramanik in the town in May this year, he is now on bail in the double- murder case.
Police also recovered a machete and a knife used in the killing of Moznu and Nahid from a bush on the bank of Karatoa River in Shajahanpur upazila yesterday morning.
Moznu Pramanik, 30, district Jubo League leader and president of Fultola Bazzar Committee in the town, and his nephew Nahid Pramanik, 24, were brutally murdered by Menko and his cohorts in Fultola area on May 26.
Moznu's wife filed a case, accusing Menko and 10 others on the day. Menko was later granted bail from a court in the case.
Another case was filed against Menko with Shajahanpur Police Station on August 14. DB is investigating the case, said DB official Mizanur Rahman.