The Central Bureau of Investigation arrested the TMC Ministers of West Bengal, Subrata Mukherjee, Firhad Hakim, MLA Madan Mitra and Sovan Chattopadhyay (former Kolkata Mayor).
In Narada Bribery Case, the state ministers were shown taking money in a video footage.
Calcutta High Court had ordered a CBI probe against the sting operation in Narada Bribery case in March 2017
CBI can investigate a crime in the state after the consent from the State Government.
However, the Supreme Court or the High court shall order CBI to conduct investigation anywhere in the country.