Mock drill in India, May 6 -- All states and Union Territories will conduct mock drills on Wednesday, May 7, in the wake of "new and complex threats" that have emerged amid rising tensions with Pakistan following the Pahalgam terror attack.

The exercises will include air-raid warning sirens, and training civilians on civil-defence aspects to protect themselves in the event of a 'hostile attack' and cleaning bunkers and trenches.

The other measures are provisions for crash-blackout measures, early camouflaging of vital plants and installations and updating and rehearsing evacuation plans, a letter to the chief secretaries of all states and administrators of Union territories said.

A similar exercise was carried out in India some 50 year...