Four held in connection with killing of two policemen.

ISLAMABAD -- An intelligence agency assisted the capital police to track down and arrest four people allegedly involved in the killing of two policemen in Tarnol last month.

ASI Mohammad Mohsin Zafar and head constable Sajid Ahmed were shot dead at a checkpoint established at Chungi No. 26 on May 26.

After initial investigation, the capital police registered terrorism case against the attackers. Later, a Joint Investigation Team (JIT) was also constituted to identify and arrest the culprits.

Officers close to the investigation told Dawn that an intelligence agency assisted the capital police to track down the culprits. The police succeeded in identifying the culprits during interrogation of a suspect arrested by the Taxila police.

An encounter took place between the Taxila police and a gang of armed men a few weeks ago. The Taxila police obtained the photo of one of the suspects captured by a camera installed at the Taxila toll plaza while escaping.

Intelligence agency helped police track down suspects, police officers says

The Taxila police arrested the suspect along with his father a week ago. The capital police interrogated the suspect who disclosed that he along with four others were involved in the killing of the two policemen in Islamabad.

He also disclosed the identification of his four accomplices involved in the killing. Later, the details of the suspects were shared with the intelligence agency which tracked them.

During preliminary investigation, the suspects confessed to killing the policemen, said the officers. The suspect told the investigators that on May 26 the five suspects, including two Afghan nationals, were going to Tarnol on separate motorcycles to sell 25 snatched mobile phones.

Police officials standing at the halting point signaled them to stop when they reached Chungi No. 26, the officers quoted the suspects as saying. The suspects said they tried to escape but all of a sudden one of their motorcycles slipped.

ASI Zafar then overpowered one of the suspects who had fallen on the road along with one of his accomplices, which led to a...