The Bharatiya Janata Party on Saturday said arms dealer Abhishek Verma's threat to file a defamation suit against Lal Kishenchand Advani and other leaders was the "worst type of cover up attempt" and demanded suspension of the Scorpene submarine deal.

What is a Scorpene?

BJP also asked the government to come clean on the issue of the Scorpene deal and "war room leakage," demanding a probe against Verma and Naval chief Admiral Arun Prakash's close relative Ravi Shankaran in connection with the two cases.