Stunned by the Facebook post and its contents, police scrambled to find out how Mr Ghosh had managed to access social media after being arrested.
However, Mr Ghosh had given enough warning of his intent. In a press conference on Friday, where he broke down in tears, the MP had said that the police had singled him out for questioning on the Saradha scam but was not interrogating many other members of his party who knew Saradha chairman Sudipta Sen - who is now behind bars - and had, directly or indirectly, benefited from him. Mr Ghosh had said, if he were arrested he would reveal the names.
Besides Ms Banerjee, Ghosh's list of 12 names includes Trinamool MP and party general secretary Mukul Roy and MPs KD Singh and Srinjoy Bose. Madan Mitra, minister of transport in Ms Banerjee's government, is also named. Mr Ghosh does not say they were in any way involved in the Saradha scam but suggests the police seek their help to get to the bottom of the scam.
Mr Ghosh was arrested for cheating, breach of trust and criminal conspiracy in what had come to be known as case 34, which relates to a complaint by a Saradha Group media outlet called Broadcast Worldwide about failure to pay salaries to its employees. Mr Ghosh, it may be recalled, was the Group CEO of Saradha's media empire. Scores of journalists were left without a job when the media outlets shut down after the Saradha Group went bust in April.
Earlier in the day, Mr Ghosh filed a complaint against police officer Arnab Ghosh for intimidation. In his press conference on Friday, the Rajya Sabha MP had said Arnab Ghosh had threatened to arrest him if he could not give details about the Saradha Group's finances. Kunal Ghosh has insisted that he was a salaried employee of the Saradha Group and had no idea about its financial dealings.
He will be produced in court on Sunday.
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.