Some unknown miscreants blasted a crude bomb at the office of Daily Chapai Chitra, a local newspaper, in Chapainawabganj town early Sunday.
The bomb was thrown around 1:30 pm but no one was at the office that time, said Alamgir Zahan, Officer-in-Charge of Chapainawabganj sadar police station.
The incident occurred after all the employees left the office around 10:30 pm, said editor of the newspaper Kamal Uddin.
Night guards of the office informed police about the blast, he said.
Kamal Uddin said he suspects someone aggrieved by any report published by them has made the attack.
OC Alamgir Zahan said police collected evidences from the spot immediately after being informed and investigating the matter seriously.
Meanwhile, Shahidul Huda Alak, president of Chapainawabganj Press Club demanded immediate arrest and punishment of those involved in the attack.