India warns Twitter to comply with new IT rules
Digital rights activists say New Delhi's latest rules could be used by the government to identify authors of critical posts on social media sites.
But the government argues they are needed to investigate national security offences and cases involving sexually explicit material.
"Needless to state, such non-compliance will lead to unintended consequences including Twitter losing exemption from liability as an intermediary," the ministry said.
The regulations demand that social media companies give details of the "first originator" of posts deemed to undermine India's sovereignty, state security or public order.
New Delhi last week said most major social media sites had already shared details of their chief compliance officer, contact person and grievance officer, including Koo, ShareChat, Telegram, LinkedIn, Google, Facebook and WhatsApp.
The row between India and Twitter escalated in May after the tech firm marked a tweet from a ruling party spokesman as "manipulated media".
New Delhi accused Twitter and other US tech giants of "double standards" in taking down disputed content.
Delhi police visited Twitter's office to serve a notice ordering it to join an official inquiry into the "manipulated media" label -- a move the company described as "intimidation".
There was no immediate comment from Twitter on the latest notice from New Delhi Saturday.
But critics say Prime Minister Narendra Modi's administration is seeking to stifle online opposition in what is a huge market for Twitter, Facebook and other tech firms.