Luis Bajana, 42, of Yonkers, New York was arrested on eight charges including trafficking in cocaine, possession of a Class A drug, possession of a Class B drug, trafficking in heroin, carrying a firearm without a license, possession of a firearm without an FID card, conspiracy to violate drug law and the sale, use or possession of a firearm silencer. Fitchburg resident, Bryan Walker, 35, of 182 Mechanic Street, faces charges of possession of a class B drug, distribution of a class B drug, operating a motor vehicle with a revoked license and conspiracy to violate drug law.