The incident took place on Wednesday night and the victim kept lying on the road unattended for about half an hour after she was hit by the vehicle, they said.
"The woman, identified as Archana Pandya, was mowed down by an unknown vehicle and we are investigating the case," a police official from Vanrai police station said.
The woman was crossing a road and was about to take an autorickshaw when the incident took place, he said.
As soon as police got the information, the girl was taken to a nearby hospital. "However, she was declared dead on arrival," the officer said, adding, further investigation is on.