Railway police superintendent K.C. Agrawal said on Tuesday that the Indian girl was lured away from her family by a man in a park in Raipur city on Friday.
Police suspect that the man has taken the girl to a train and sexually assaulted her in the restroom sometime between Friday night and Saturday morning.
Agrawal said that the 40-year-old man was apparently the friend of the girl’s family.
The victim was left at the train station on Saturday morning. She was admitted to a hospital for treatment.
The attacker remains at large, with police teams reportedly fanning out to capture him.
The incident is the latest in a string of rape crimes that sparked nationwide outrage and protests in thecountry.
On April 25, Indian police said the dead body of a six-year-old girl was found in an under-construction building in Ranchi district of the eastern state of Jharkhand. The child was subjected to torture and rape.
On April 15, a five-year-old girl was abducted by her neighbor in New Delhi. She was held in a room for 48 hours and was raped several times before a passerby heard her moaning and rescued her.
On December 16, 2012, a 23-year-old Indian woman was gang-raped and savagely beaten on a moving bus and thrown out on to the street in New Delhi. She succumbed to her injuries in a hospital in Singapore on December 29.