directed by Shaji N Karun , Maduranombarakaatu ( 2000 ), Meghamalhar ( 2001 ), Perumazhakaalam ( 2004 ) and Karuthapakshikal ( 2006 ) directed by Kamal .Sequels have been made of a number of successful films. These include Ravanaprabhu ( Devasuram ) and Nerariyan CBI ( Oru CBI Diarykurippu ). Generally