The incident took place yesterday night in the SGM area, said police spokesperson.
While the girl was sleeping, Heera, who lives in a room on a lower floor of the same building as the victim, barged in. He gagged the girl and raped her. Later, another youth Sushil also came and raped her, the spokesman said.
The two then fled the spot.
On the basis of a complaint lodged by the girl's mother, a case has been registered against Heera and Sushil and investigation is on, he said.