New Delhi, March 19: Senior BJP leader Arun Jaitley on Saturday demanded a CBI probe which should be conducted under Supreme Court's supervision to nail the culprits in the cashforvote scam in the wake of Wikileaks revelation.Jaitley told Rajat Sharma's Aap Ki Adalat show on India TV that the Wikileaks expose of a US diplomat's cable has "corroborated" the truth behind the sting operation that was carried out by some BJP MPs in July 2008 hours before the confidence vote, after which they displayed wads of currencies in the Lok Sabha.