NEW DELHI, July 6 (Reuters) - Twitter Inc (TWTR.N) no more enjoys liability protection against user-generated content in India as the U.S. microblogging giant has failed to comply with new IT rules, the Indian government said in a court filing. The statement is the first time Prime Minister Narendra Modi"s administration has officially said Twitter has lost its immunity after repeatedly criticising the company for non-compliance. The dispute and the public spat has raised concern that American firms will find it difficult to do business amid a more stringent regulatory environment. India"s IT ministry told the High Court in New Delhi that Twitter"s non-compliance amounted to a breach of the provisions of the IT Act, causing the U.S. firm to lose its immunity, according to the filing dated July 5. The filing came in a case filed by a Twitter user who wanted to complain about some allegedly defamatory tweets on the platform, and said the company was not complying with the new law that requires appointment of certain new executives. The Twitter logo is displayed on a screen on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., September 28, 2016. REUTERS/Brendan McDermid People holding mobile phones are silhouetted against a backdrop projected with the Twitter logo in this illustration picture taken September 27, 2013. REUTERS/Kacper Pempel/Illustration/File Photo A 3D printed Twitter logo and a padlock are placed on a computer motherboard in this illustration picture taken May 4, 2021. REUTERS/Dado Ruvic/Illustration/File Photo 1/3 People holding mobile phones are silhouetted against a backdrop projected with the Twitter logo in this illustration picture taken September 27, 2013. REUTERS/Kacper Pempel/Illustration/File Photo Twitter declined to comment. The company has previously said it was making all efforts to comply. India"s new IT rules which became effective end-May are aimed at regulating content on social media firms and making them more accountable to legal requests for swift removal of posts and sharing details on the originators of messages. Technology minister Ravi Shankar Prasad has slammed Twitter for deliberately defying the law and said all social media firms must abide by the new rules. In recent weeks, as acrimony grew between New Delhi and Twitter, Indian police have filed at least five cases against the company or its officials, including some related to child pornography and a controversial map of India on its career page. Police in two Indian states have named Twitter India chief Manish Maheshwari in complaints. Separately, the state of Uttar Pradesh has challenged in the Supreme Court a bar on police action against Maheshwari, after a lower court protected him against arrest over an accusation that the platform was used to spread hate.