Five units of the Fire Service and Civil Defence worked to tame the blaze
The accident took place in front of Mohammadpur’s RAB-2 offices on Friday morning.
Doctors at Dhaka Medical College and Hospital (DMCH) declared the assistant, Md Rajon, 20, dead after he was taken there.
Police said driver Atiqur Rahman crashed his pickup van, carrying water, into the bus seriously injuring himself and Rajon.
Rahman is currently being treated at the DMCH.