India said on Monday it had responded to 'unprovoked' firing from Pakistan along the de facto border for the fourth consecutive night, as it deepens its search for militants in the region following last week's deadly attack on tourists in Kashmir.

In the days since, tensions have risen dangerously between India and Pakistan, which have fought two of their three wars over Kashmir.

India said its troops responded to firing from Pakistan military positions in the Jammu and Kashmir region for a second day on Saturday, as tensions remained escalated between the neighbors after a deadly attack on tourists this week.