Ahead of Independence Day, Punjab Police in a joint operation with  Delhi Police has busted a Pakistan-based ISI-backed terror module with the arrest of four terrorists.<br />'' <br />'' In a tweet, Punjab Police said that the four members associated with Canada-based Arsh Dalla and Australia-based Gurjant Singh have been arrested. Three-hand grenades (P-86), 1 IED and two 9mm pistols along with 40 live cartridges were also recovered from the terrorists.<br />'' <br />''Our correspondent reports that tight security arrangements have been made across the state ahead of Independence Day.