Tamil actor Surya is currently busy with Singham’s sequel “S-3”. The film is being directed by Hari. Anushka Shetty and Shruti Hassan are playing the female leads opposite Surya in the film. The movie is going to be an action entertainer and the film’s unit is planning to release it on the occasion of Diwali.After S-3, Surya will be working for an untitled film which is going to be directed by Muttaiah. The movie would go onto the sets very soon. The makers are planning to cast Keerthi Suresh who became famous with the film ‘Nenu Shailaja’ and Ritika Singh who became famous with the film ‘ Sala Khadoos’ as the female leads opposite Surya.