At least four persons were on Friday killed and six others injured when a tractor-trolley in which they were travelling overturned at Bari, 30 km from Dholpur district in Rajasthan, police said.
The injured were rushed to Dholpur Government hospital, where the condition of two of them is said to be critical, Bari police station SHO, Boraj Singh told PTI.
The tractor, laden with iron pipes, was on way from Bari to Kharakpura in Baseri town.
Initial investigations have revealed that incident took place after the driver lost control of the tractor, the police officer said. However, further probe was on, he said.