The Japan Times - India blocks Pakistani celebrities on social media

India blames Pakistan of backing the deadliest attack in years on civilians in Indian-administered Kashmir on April 22, in which 26 men were killed.

Islamabad has rejected the charge, and both countries have since exchanged gunfire across their contested de facto border in Kashmir.

Pakistan's military said it carried out a "training launch" of a surface-to-surface missile weapons system on Saturday, further heightening tensions.

On Saturday, India's communications ministry issued a statement saying it had "decided to suspend the exchange of all categories of inbound mail and parcels from Pakistan through air and surface routes".

The arch-rivals had already expelled each other's citizens and closed the main border crossing, and barred aircraft from each other's airspace.

Indian media on Saturday, citing a Directorate General of Shipping (DGS) order, said that Pakistani-flagged ships are barred from any Indian port -- and Indian ships are banned from Pakistan.

The move, however, is seen as largely symbolic, as regular diplomatic flare-ups between the neighbours over decades have prevented close economic ties.

But cultural ties remain far stronger; the nations were only divided by the 1947 colonial creation at the violent end of British rule, partitioning the sub-continent into Hindu-majority India and Muslim-majority Pakistan.

On social media, India banned on April 28 more than a dozen Pakistani YouTube channels for allegedly spreading "provocative" content, including Pakistani news outlets.

On Saturday, further restrictions blocked access in India to the Instagram account of Pakistan's ex-prime minister and cricket captain Imran Khan.

Bollywood movie regulars Fawad Khan and Atif Aslam were also off limits, as well as a wide range of cricketers -- including star batters Babar Azam and Mohammad Rizwan and retired players Shahid Afridi and Wasim Akram.

Olympic gold medallist Arshad Nadeem's Instagram account was also no longer accessible to Indian users, reflecting the broad scope of the clampdown beyond just cricket.

Users in India attempting to access these accounts are shown a message indicating that they are unavailable due to compliance with a legal request.

S.Yamamoto--JT