Officials said while Balurghat MP Ghosh has been summoned to appear on February 13, Sinh's aides Khyati Sadana and Rupendranath Singh have too been called in the next week.
"The statements of all the accused will be recorded next week under the Prevention of Money Laundering Act (PMLA). While Sadana is Sinh's aide and first assistant, Singh is a director in a firm owned by the Congress leader," a source said.
Sources said the aides of Sinh, who was recently arrested by CBI in this case, will be questioned about the transactions made by the former Minister of State for Home and their role in his businesses.
Sinh allegedly received a payment of Rs 28 crore from the defunct group in return of starting a new business venture.
The agency has filed a criminal case in this scam and has attached assets worth Rs 500 crore till now in this probe.