The identities of the deceased could not be ascertained yet.
At least 19 people were also injured in the incident. The injured were rescued and treated at Palashbari Upazila Health Complex.
Palashbari Police Station inspector Mostafijar Rahman said that the rod-laden truck was going to Rangpur from Bogra. On Dhaka-Rangpur highway in Jundah area, the truck overturned at around 12:00 pm, leaving seven people, who were travelling on the truck, dead on the spot.
Earlier, Three workers of Nasiman were killed in a collision with a bus in front of Sarker Filling Station at Palashbari Upazila of Gaibandha.