Siva Karthikeyan’s much-awaited film “Amaran” is set for a grand Diwali release, with promotions now underway. The first look teaser of Sai Pallavi, who plays Indhu, has been revealed today. Inspired by the life of soldier Mukund Varadharajan, the film features Siva Karthikeyan as Major Varadharajan. It will release in Tamil and Telugu, competing with “Brother” and “Bloody Beggar” at the box office.