Blasts rang out across Indian Kashmir and the Sikh holy city of Amritsar in neighbouring Punjab state late on Friday, with the Indian military saying it was shooting down drones in the worst fighting with Pakistan in nearly three decades.

Pakistan's military says it has launched retaliatory strikes on sites in India, alarming world powers about further hostilities between the nuclear nations.

Earlier, at 4:39 am, the District Collector had also advised residents to keep lights off and avoid going near windows, roads, balconies, or terraces.