Amritsar, Jan. 29 -- Nearly two weeks after an explosion rocked Amritsar's Gumtala police post, the state special operation cell (SSOC) claimed to have busted a Pakistan-ISI backed narco terror-module, being operated by US-based terrorist Harpreet Singh alias Happy Passia and notorious drug smuggler Sarwan Bhola, with the arrest of two members.

The accused have been identified as Bagga Singh of Sirsa, Haryana, and Puskaran Singh alias Sagar of Amritsar.

Police teams have also recovered a hand grenade and two sophisticated pistols along with ammunition from their possession.

While police had initially maintained that the explosion was a result of a car radiator going off, Punjab director general of police (DGP) Gaurav Yadav on Tuesday s...