As per sources, the driver and his daughter are in critical condition while his son is out of danger. They have been referred to Imphal for further medical treatment.
The road accident victim's father said the state government not finding the culprits even after a month of the incident is unfortunate.
A dumper truck ran over the sleeping labourers, killing 14 of them on the spot while one person died in the hospital.
The road mishap occurred at about 11.30 am on the western side of Kwakeithel junction along Tiddim road.
Wife of former minister Moirangthem Hemanta died on the spot after a road accident occurred along National Highway 102 (Imphal-Moreh road) at around 10:20 am on Sunday
The three youths who were riding in a bike met with the fatal incident when they collided with a DI Tata pickup truck along the NH-2.
The deceased has been identified as one Sanasam Samer of Lamding Cherapur.