"The TMC and CPI(M) are silent regarding the Agusta Westland deal. Why are they silent on the issue of corruption of Congress? This proves their double standards," Singh said in Kolkata.
He also took a dig at former West Bengal Chief Minister Buddhadeb Bhattacharya for holding the hand of Congress Vice-president Rahul Gandhi at a rally in the city yesterday.
"The hand of Congress resembles nothing but corruption. What would Bhattacharya say regarding his party's earlier criticism and stand on 2G and CWG scams? Has he forgotten that? What is the present stand of Mr Bhattacharya regarding the Agusta Westland deal?" Singh asked.