DNA: Why Congress silent on Dhiraj Sahu?

Dhiraj Sahu 350 Crore IT Raid News: Dhiraj Sahu is a Congress MP. Therefore, questions will also be raised on the party as to where their MPs brought so much cash from. And what action is the party taking against him. Congress has sought answers from Dheeraj Sahu regarding the cash issue, but has not yet expelled him from the party. That's why BJP has called it corruption of Congress. Questions have been raised to Congress that their party's MPs are involved in corruption. Why are Congress leaders not giving any statement on that?