"Nitish Kumar is saying he does not act on law and order issue under anybody's pressure. Then he should answer why the same Anant Singh was not arrested in past 10 years of his rule despite his name cropping up in a dozen cases," Modi said in a statement.
He accused both Prasad and Kumar of adopting the policy of "use and throw" for the 'muscleman' MLA.
"Under pressure from the chief minister, the administration and police all along 10 years never dared to act against Anant Singh," he said and questioned "Is this rule of law under Nitish Kumar?"
The Mokama MLA recently inaugurated his mall in Patna defying a Patna High Court order and when he threatened to kill former CM Jitan Ram Manjhi following his revolt against Kumar, "why the government remained silent?" he asked.
Kumar and Prasad are trying to project themselves as "martyrs now," Modi, who was Deputy Chief Minister during the NDA rule, said.