A CRPF sub-inspector allegedly shot dead a senior with his service weapon before killing himself in their Lodhi Estate quarters after an argument late on Friday night.

“When a police team reached the spot, they found the two CRPF officers lying in a pool of blood. Both of them had gunshot wounds and were dead by the time the team reached,” a Delhi police officer said.

A preliminary probe has revealed that sub-inspector Karnail Singh, 55, shot dead his roommate, inspector Dasrath Singh, 56, with his service weapon and then shot himself, the police said. The campus where the incident took place is allotted to the Union home ministry.

Karnail Singh hailed from Jammu and Kashmir while Dasrath Singh was a resident of Haryana.

M. Dhinakaran, the CRPF DIG, said: “An SI of the 122 battalion of the CRPF shot dead an inspector of the same battalion before shooting himself with his service weapon.

The incident is an aberration that seems to have been committed at the spur of the moment. An inquiry has been ordered to establish the facts of the matter.

Senior officers of the force have rushed to the spot and are handling the situation.”

Some senior officers of the CRPF who live on the campus said they heard gunshots around 11.30pm and alerted the cops.