Four of the accused, namely Parveen, Nitin, Deepak and Karan of Kundali area have been arrested while Sandeep, who belongs to Baghpat district of Uttar Pradesh, is still at large, Kundali Police Station In-charge Dheeraj Kumar said.
The incident took place last night when the girl was returning from Dusshera celebrations from Delhi border along with her brother, and the accused who were in an auto abducted her from Janti Kalan colony road, police said.
The accused also hit her brother with a stick, police said, adding, after the gangrape and murder they buried her body in fields near Aterna village, police said.
During interrogation Nitin disclosed names of the other three people involved in the case. A special team has been formed to arrest Sandeep, police said.
Police recovered the body and handed over it to the family after postmortem.