The three-wheeler from Balasore was bound for Baripada when the truck rammed into it at Salabani under Baisinga police station, on the busy Kolkata-Chennai NH-18, Betonati SDPO Anil Patra said.
Family members of a vegetable vendor in Baripada town were returning after attending a family function in the ill-fated autorickshaw, Patra said, adding that the truck was seized and the driver arrested.
Barring the child, all occupants of the autorickshaw including vegetable vendor Nurul died in the accident, he said.
Angry villagers staged a road blockade for some time demanding compensation and remedial measures to prevent such mishaps.