CHAPAINAWABGANJ: Detective Branch (DB) of police and RAB arrested four persons and recovered 477 bottles of phensidyl and 10-kg of hemp in separate raids. The arrested persons are identified as Shafiqul Islam, 35,  Belal Hossain, 48, Monirul Islam, 46, and Rafiqul Islam, 46, of Chapainawabganj sadar upazila. Inspector Hamidur Rashid of Detective Branch said being informed, a team of DB police intercepted a private car at Nayagola at about 7.30 am yesterday and arrested them.