In the sequel of CBI Series, The character of Sethurama Iyer will be done only by Mammooty , said the director Madhu. He was reacting to the news reported that his next detective film will have Suresh Gopi in the Lead. The rumors are the audience proximity. Actually the truth is something different. If everything goes well as planned in the fifth sequel , Mammoty will be handling the main role. The characters of the CBI sequel had influenced the audiences very well and that is why the news is getting spread so fast Mammottys character Sethurama Iyyer will not be a part in the fifth sequel.