Gulfam (18) and his associate Mohammad Rafique (19) were arrested at Nizamuddin Railway Station for the murder of his live-in partner, whose body was found stuffed in an almirah in their rented house on April 29, police said.
On May 2, neighbours informed police about foul smell emanating from the locked house at Matiala in Uttam Nagar following which a police team reached the spot.
Police broke open the doors and found the body of the girl in an almirah.
The two were arrested at Nizamuddin Railway Station where they were waiting for a train to abscond, police said.