New Delhi, May 11 -- As tensions remain high between India and Pakistan, Punjab reimposed blackout measures in several districts as a precautionary measure, an emergency blackout drill was conducted at Pune Airport and Amritsar District Collector issued a red alert, urging residents to stay indoors and away from windows.

The developments came hours after India said that Pakistan violated the understanding reached between DGMOs of the two countries earlier in the day on the stoppage of firing and military action and that the Indian Army is retaliating and dealing with the border intrusions.

From 'bilateral understanding' declaration to Pakistan's violation to explosions, airport advisory: All you need to know

1. Amritsar District Collec...