Mathura:
Three children and a woman were killed on Sunday night while more than six persons were grievously injured when a tractor collided head-on with a car in Mathura, police said.
22-year-old Kamlesh, Sachin (9) and two children aged 8 and 10 died on the spot, police said.
The injured have been shifted to a local hospital, they said.
The tractor driver fled from the scene, they said, adding that a case has been registered in this connection and the matter is being probed.