According to The Indian Express, AR Murugadoss cleared the air on the reports that suggested he was working on the sequel of Ghajini.

Source: https://www.koimoi.com/south-indian-cinema/ghajini-sequel-is-happening-with-aamir-khan-director-ar-murugadoss-breaks-silence-says-i-will-do-something/

Elaborating on his upcoming release, Murugadoss adds: “In the beginning, we intended this film to be a Tamil release, but as we moved ahead, the unanimous reaction was that our story needs to be seen on a wider Pan-India scale.

Source: https://www.canindia.com/a-r-murugadoss-pens-emotional-letter-before-august-16-1947-release/