An industrialist, Santosh Chaturvedi, was travelling with his friend from Mathura to Noida when his car collided with a vehicle near the Jewar toll plaza. Three people died on the spot while six were injured critically, police said.
The accident caused a heavy traffic jam on the Expressway.
In a second incident, a bike was hit by a vehicle near Chapargadh village killing the driver of the bike on the spot.
In another incident a bus rammed into a woman, killing her on the spot.
"All injured were admitted to a hospital in Greater Noida and the bodies have been sent for post mortem," SP Rural Sujata Singh said.
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