Dinajpur A joint team of police and RAB has arrested Asadul Islam, the main accused in the attack on Ghosaghat Upazila Nirbahi Officer (UNO) of the district.
Hakimpur police station OC Ferdous Wahid confirmed the poison.
He was arrested from Kaliganj area of Hili under Hakimpur police station on Friday around 5 am, he is the son of Amjad Hossain of Osmanpur in Ghosaghat upazila.