The district administration has formed a three-member committee to investigate Chouddagram sabotage, where seven people were burnt alive and 15 hurt in a petrol bomb attack early Tuesday.
Police said pro-blockade activists unleashed the attack on the bus from Icon Paribahan in Jagmohanpur area of Miar Bazar in Chouddagram around 3am. The dead included a woman and two children.
The committee headed by additional district magistrate Muhammad Golamur Rahman has been asked to submit its report within five days.
Meanwhile, the joint force is carrying out special operations to nab the anarchists behind the gruesome attack.