Of the deceased, one was identified as Sanaul Haque, 25, a resident of Kishoreganj.
Officer-in-Charge of Bojoynagar police station Arshad Ali told the Dhaka Tribune that a head-on collision took place between an auto-rickshaw and bus around 12:30pm, leaving four people dead on the spot.
The injured woman was admitted to Madhabpur Upazila Health Complex where doctors declared her dead.