Members of Rapid Action Battalion (RAB) on Monday arrested the supervisor of the bus that plunged into a roadside pond in Jhalakathi Sadar upazila and resulted in the deaths of 17 people.
The arrestee, Foysal Mizan, 30, a resident of Nalchity upazila in Jhalakathi, was arrested from the Rajapur area within the same district.
Mizan was later transferred to the custody of the Jhalakathi Sadar police station, said a press release on RAB-8.
Earlier, On Sunday night, SI Sushankar of Jhalakathi Sadar police station filed a case against bus driver Mohan Khan, 40, his assistant Akash, 17, and supervisor Mizan, 30.
Bus driver Mohan Khan and his assistant Akash are still on the run.
Jhalakathi sadar police station OC Nasir Uddin said the police filed the case as no one else lodged one on behalf of the victims.
Meanwhile, a five-member probe committee, formed by the local administration, revealed on Sunday that the driver did not have a licence to operate heavy vehicles.
Additionally, at the time of the accident, Mohan was talking with several bus passengers, including supervisor and helper.
At least 17 people were killed and more than a dozen others were injured after a bus plunged into a roadside pond in the Chhatrakanda area of Jhalakathi Sadar upazila on Saturday.
The Barisal-bound bus from Bhandaria upazila of Pirojpur fell into the pond near the local union parishad office.