The third installment in the "Singam" franchise, starring Suriya as a police officer, has been officially titled "S3", the makers announced on Thursday.The announcement was made via the official Twitter handle of the film's production banner Studio Green, along with the movie's poster.The title "S3" was accompanied by a tagline 'The Universal Cop'.Three posters have been released so far, and three more posters will be revealed over the next few days.The regular shooting of the project started on Thursday in Vishakhapatnam.Directed by Hari, who had also directed the first two parts, "S3" also features Shruti Haasan and Anushka Shetty in the lead roles.The film will have music by Harris Jayaraj.