A boring machine truck overturned after the driver lost balance on wheels while trying to evade an accident with a two-wheeler, SHO Neem Ka Thana Ranjeet Singh said.
The deceased have been identified as three Chhattisgarh-based labourers Rati Ram, Dinesh, Masu Ram and two-wheeler rider Sudesh Jat.
Their bodies have been kept at a local hospital for post mortem, police said, adding that the vehicles have been seized.