Police has registered a case under various sections of the IPC against four persons including Bobby, a resident of Sector 25 in the district.
According to the FIR filed by the victim, Bobby along with three others abducted the girl in a three-wheeler last night, when she was returning home after purchasing grocery.
The accused injected her with some intoxicant substance, which made her unconscious, gang raped her and later dumped her near Ghaziabad railway station, police said.