Congress today said Delhi Chief Minister Arvind Kejriwal should immediately resign following charges of corruption against him. <br/><br/>Briefing media in New Delhi, party leader Ajay Maken demanded probe against Kenjriwal saying Anti-Corruption Bureau and CBI should lodge FIR against him. <br/><br/>He said, there are corruption charges against 6 out of 7 Aam Aadmi Party ministers.