An official said around 272 Pakistani nationals left India on Friday and Saturday through the Attari-Wagah border point, and a few hundred more exited on Sunday.

Asif said Pakistan was on high alert and that it would only use its arsenal of nuclear weapons if "there is a direct threat to our existence".

Gunmen terrorists attacked tourists at Baisaran meadow, killing 26 people, with security forces now hunting for the Pakistani terrorists involved. The Resistance Front claimed responsibility, and investigations are underway to uncover the network behind the attack.