Delhi Chief Minister Arvind Kejriwal on Monday paid tributes to the security personnel killed by terrorists in Punjab."I salute the soldiers who sacrificed their lives while fighting the terrorists. Jai Hind," the Aam Aadmi Party leader tweeted.Earlier, he condemned the incident in Dinanagar town in Gurdaspur district as a "cowardly" attack on innocents.Seven people, including a senior police officer, were killed in the terror strike. All three terrorists were also killed.