BJP leader Gaurav Bhatia addressed a press conference on Bofors issue on Tuesday, saying Sonia and Rahul Gandhi should resign until they disclose their ties with Italian businessman Ottavio Quattrocchi. He cited an ex-Indian ambassador's claim that "Rajiv Gandhi (Ex-PM) was the kingpin facilitator" in the Bofors scam. CAG found "evaluation of the competing guns was seriously flawed", Bhatia said.