The reason for secret negotiations is that US is leaving Afghanistan and want to come into Kashmir... And both Pakistan and Indian governments have been given the task to prepare the environment for that... Obviously IK cannot tell this to the nation.

 https://edition.cnn.com/2021/04/13/politics/biden-afghanistan-withdrawal/index.html

https://twitter.com/ZaidZamanHamid/status/1382489948733968390