A 23-year-old man was killed and three others were injured after a tractor-trolley overturned in Rajasthan's Kota district on Monday, police said.

The incident took place when the tractor, loaded with cement and concrete material, could not generate enough power while going up a steep slope near Tathed overbridge, Station House Office (SHO), Kaithoon, Sugan Singh said.

Driver of the tractor Hariom Meena from Devpura village died on the spot, while other three persons sustained injuries, he said.

Meena's body was handed over to his family members after post-mortem, the SHO said.

The injured are undergoing treatment at the Maharao Bhim Singh Hospital here, he said.

They were contract labourers transporting construction material for an ongoing railway project, he added.

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