"They were admitted to Raigarh Metro Hospital. Three of them were stated to be out of danger," he said. The condition of the fourth girl was still critical.
A youth has been detained in connection with the incident, police said.
The incident took place when the girls were returning after attending a religious discourse at night. The assailant had covered his face with a scarf.
Before the other people in the vicinity could react, he managed to escape.
Thakur said old enmity could be the reason behind the attack, and a youth had been taken into custody on suspicion and was being interrogated.