The deceased was identified as Nurul Huda, 70, a resident of Polashbari village in the upazila.
Quoting locals, Nawabganj Police Station officer in-charge Ashok Kumer Chowhan said the motorcycle collided head-on with the easy-bike in Chawkdalu area, leaving the easy-bike passenger dead on the spot and motorcycle rider critically injured.
The injured were taken to Nawabganj Upazila Health Complex where the on-duty doctor referred him to Dinajpur M Abdur Rahim Medical College Hospital.
GMR/MUS