NEW DELHI: India on Saturday issued "one last notice" to Twitter to comply with new IT regulations that the social media giant says threaten privacy guarantees.

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.

India's electronics and IT ministry said Saturday it was "dismayed" over Twitter's "non-compliance" and flagged the May 26 deadline, when the new rules came into force. "The refusal to comply demonstrates Twitter's lack of commitment and efforts towards providing a safe experience for people of India on its platforms," its notice said.