A 19-year-old resident of Nagyal in Rawalpindi's Gujjar Khan tehsil on Monday allegedly shot dead his sister and and her husband in what police described as an 'honour killing'.

The accused, identified as Saeed Anwar, had been upset at his sister — Mismat Musarrat, 18— for marrying Qaiser, 25 after finding out that the victims had been romantically involved prior to their marriage.

SHO Ishtiaq Masood Cheema told DawnNews that the suspect had been waiting for an opportunity to kill the husband and wife ever since they married a few months ago.

The SHO said that, upon finding the couple alone in their house, the accused fired at them with a pistol, killing them both on the spot. He later tried to flee the scene, but was apprehended by the police along with the murder weapon.

SHO Cheema said police have booked Anwar for a double murder. Police will present him in court tomorrow to seek physical remand. The bodies of the victims have been shifted to a local hospital for a post mortem examination.