The incident took place at the west side of Bangabandhu Bridge in Sirajganj district, around 125 kms from here, in the wee hours when a Rangpur-bound bus from Chittagong collided with a Dhaka-bound bus from Gaibandha area.
Soon after the accident, fire brigade, ambulances and police were rushed to the spot to carry out rescue and relief operations.
Among those killed, 12 people died on the spot including both the bus drivers while three others succumbed to injuries on way their way to hospital. All the injured were rushed to different nearby hospitals.
"A four-member committee has been set up to investigate the accident and directed to submit their findings within three days," Deputy Commissioner Billal Hossain was quoted as saying by bdnews24.Com.
The families of those killed would be given 10,000 Taka (USD 129), he said.