In a crackdown against those involved in the attack on the Indian high commission in London, the NIA on Tuesday raided 31 locations in Punjab and Haryana.
Khalistani supporters have been propagating an ideology and a set of conspiracy theory narratives that encourage Sikhs in Britain to believe they are under relentless attack and thus violence is justified in "self-defence".
PM Narendra Modi on Thursday had a telephonic discussion with his British counterpart Rishi Sunak and extended Baisakhi greetings to him and the Indian community in the UK.