Patna, Nov 18 (PTI): Launching a frontal attack on the party leadership, BJP MP Shatrughan Sinha today said those with "vested interests" are refusing to learn lessons from the Bihar debacle and asserted that no one has the guts or DNA to tick him off, an apparent dig at Prime Minister Narendra Modi.

Siding with veterans' demand for fixing accountability for the loss, Sinha said the "camouflage" of collective responsibility is unacceptable and responsibility must be fixed on individuals for corrective actions.

The Lok Sabha MP ridiculed any move to take action against him for his ceaseless criticism of the party, saying it is just bravado of the ill-advised to talk of action.

"Some vested interests are still at it... refusing to learn any lessons, still working on creating misunderstandings through misinformation. R K Singh, former Home Secretary and a proud Bihari Sher (a tough nut to crack) is right. No one has the guts (or DNA) to give us a 'fatkaar'," he tweeted.

His DNA barb is an apparent reference to Modi's DNA dig at Bihar Chief Minister Nitish Kumar who had made it a major campaign issue in the Bihar assembly election.

"Those responsible for the debacle must answer what, why, where and how it all happened. They must satisfy the real stalwarts/veterans of BJP. It's just bravado of the ill-advised to talk of action. The time is for reaction, understanding, apology and satisfaction of party godfathers," he said.

Sinha has been critical of BJP since Bihar poll campaign took off but had been so far guarded in his attack on the top brass, bringing instead the state leadership in his line of fire.

His sharp attack indicates that the film actor-turned politician has decided to escalate his attack even as he has been effusive in his praise of Kumar, who led the grand alliance of JD(U)-RJD-Congress to a massive victory.