The Kolkata Police Commissioner Mr. Rajeev Kumar has filed a criminal defamation case against BJP leader Mr. Kailash Vijayvargiya for alleging the top cop had a role in destroying evidence related to the multi-billion rupee Saradha scam. <br/><br/>Mr. Kumar filed a petition at the city sessions court. The court has asked the BJP leader to appear before it on the 7th of next month. Mr. Vijayvargiya, had last month accused Mr. Kumar of not taking adequate steps against several Trinamool Congress activists who attacked the state BJP head office in Central Kolkata and said they would ask for a CBI probe against the officer.