Replying to a question about the victim's condition, Shinde said: "We are trying to ascertain the her medical condition."
The girl was abducted April 15 and kept hostage for two days without food and water in a room in which the attacker lived, on the ground floor of the building in east Delhi's Gandhi Nagar. The victim's family stays in the same building, police said.
The accused Manoj Kumar, 25, was arrested from a village in Bihar's Muzaffarpur district early Saturday, police said.
The girl, who was repeatedly raped, was rescued when members of her family heard her screams on Wednesday. She is undergoing treatment at the All India Institute of Medical Sciences.