Kolkata, July 10, July 11 -- Jammu and Kashmir Chief Minister Omar Abdullah on Wednesday said the Pahalgam terror attack, in which 26 people were killed, has underscored the need for round-the-clock alertness to prevent such incidents from recurring.Speaking to reporters on the sidelines of a tourism promotion event here aimed at reviving travel to J&K, Omar said, "Pahalgam incident has shown that we need to be alert 24x7 to prevent such incidents from recurring."Asked about the delay in arresting the culprits behind the Pahalgam attack, the CM said investigations take time and that there was no fixed timeline for such actions."Arrests do not depend on any time frame. I am confident that one day the perpetrators of the attack will be appr...