The Enforcement Directorate on Wednesday questioned Maharashtra Minister Nawab Malik in a money laundering probe linked to the activities of the Mumbai underworld.
NCP ally Shiv Sena claimed that Malik was taken away by the ED from his home early in the morning.
Both the NCP and Shiv Sena have attacked the BJP at the Centre for misusing agencies to harass political opponents.
Sena MP Sanjay Raut warned the BJP that its leaders will also be probed after 2024.
NCP leader Supriya Sule said this is a new type of politics of vendetta started by the BJP.
Malik's alleged links in relation to some property deals are said to be under the radar of the federal probe agency.
The minister had been in the news for the last few months after he made a number of personal and service-related allegations of wrongdoing against former Mumbai NCB zonal director Sameer Wankhede.
These charges came soon after the NCB conducted raids at a cruise in October last year and arrested 20 people including actor Shah Rukh Khan's Aryan Khan.
Malik's son-in-law Sameer Khan was also arrested in a drugs case by the Narcotics Control Bureau's Mumbai unit last year.