The deceased have been identified as Sumitra Mohanta and her grandson Subham Mohanta of Bankamaruni village.
Sources said, Sumitra and her grandson were standing in front of their house alongside the NH when they were hit by the speeding truck, leaving the duo critically injured.
Family members rushed the duo to the District Headquarters Hospital (DHH) here in a 108 ambulance. However, doctors at DHH declared them “brought dead”.
On being informed, the police reached the spot and seized the truck. They also detained the driver of the vehicle and started investigation into the matter.