The incident took place at Gaidghat Cold Storage area in the upazila at around 4 pm.
The deceased were identified as Ful Banu Begum,65, wife of another deceased Mujibar Sikdar of Gaidghat Ghoppara of Bagharpara in Jashore and Al-Amin, 27, son of Abdul Latif of Horishpur Deadanga in Shalikha of Magura district.
The injured Mehedi Hasan, 22, son of Ijaz Biswas of Harispur Deadanga, Ali Hamza, 29, son of Noor Ali of the same village, Masum Billah, 22, son of Kubad Ali and Limon Hossain, 20, son of Asken Mollah were in the truck.
Witnesses said that a brick-laden truck coming from Jashore, hit intellectually disabled woman Ful Banu Begum killing her on the spot. Al-Amin, the driver of the truck, died when the truck lost control and dashed against a tree beside the road.
Being informed, Khajura police out post in-charge SI Jumman Khan reached the spot, recovered the bodies and sent those to Jashore General Hospital.
Later, the bodies were handed over to the victim's family.
A case was filed in this connection. The killer truck is in police custody, SI said.