Mammootty, the Big M of Mollywood, is back with yet another police role. Interestingly, Mammootty is playing a different police role in Kasaba, the directorial debut of Nithin Renji Panicker.As per the sources close to the project, the actor's character, Circle Inspector Rajan Zachariah is not like his earlier police officer roles. Rajan is an officer who is very cunning and soft-natured.