Shiv Sena leader Sanjay Raut on Monday said former Mumbai police chief Param Bir Singh, whose allegation of corruption against Maharashtra Home Minister Anil Deshmukh has triggered a crisis in the Maha Vikas Aghadi government, is the "most important weapon" for the opposition right now.

As the demand for Deshmukh's resignation grew louder, Raut said if the Nationalist Congress Party (NCP) feels that there is no evidence against him then what is wrong with it. "If the government is ready to take up the challenge for a probe then what is the problem," he posed. Deshmukh belongs to the NCP. The NCP has strongly backed Deshmukh and ruled out any possibility of his sacking.