"A medical test on the victim to ascertain rape will be conducted soon," Chanda said.
According to police, the victim, along with another girl, had gone for a bath to a pond in the locality at around 3 am on the occasion of Maha Shivratri. Two young men started teasing the girls.
While her companion fled the spot, the victim was forcibly taken by the youths to a building still under construction and raped.
The incident comes just two days after West Bengal Human Rights Commission chairman and former Supreme Court judge Asok Kumar Ganguly said West Bengal "was not lagging behind Delhi in the number of atrocities on women, and may have (even) surpassed the the national capital (in such crimes)".