Sanatan Roy Chowdhury, a lawyer who had allegedly been posing as the state’s standing counsel and the CBI’s lawyer, told investigators that he had travelled to various countries pretending to be a representative of the Union home ministry, police said on Wednesday.

A purported photograph has emerged showing Roy Chowdhury standing at a podium with “BRICS” written on it.

BRICS is an international conference attended by the head of government of Brazil, Russia, India, China and South Africa.

An officer said Roy Chowdhury, who is in police remand, had said that he was part of an entourage that participated in one of the BRICS conclaves.

The police said they would write to the ministries of external affairs and home affairs seeking details of the members of the entourage who toured with the Prime Minister and represented India at the international conference.

Roy Chowdhury was arrested on Monday. He, in connivance with others, had allegedly impersonated the state’s standing counsel and tried to sell a property at Mandeville Gardens to a promoter without the consent of the owner.

The police said they had also found that Roy Chowdhury had contested the 2009 Lok Sabha polls from the Dum Dum constituency on behalf of the Lok Janshakti Party.

A senior officer said they were trying to find out whether Roy Chowdhury was involved in more such cases of cheating and forgery.

The police said they had come across at least one instance where Roy Chowdhury had masqueraded as an official in the chief minister’s office and called the officer in-charge of a police station to give instructions on a case.

Realising that it was a fake call, the officers of the police station started a case against the person based on the phone number from where the call had come.

Later, it was allegedly found that the call was made by Roy Chowdhury.

He was also allegedly found in possession of a beacon-fitted vehicle that had multiple boards attached on it claiming that it belonged to the state’s standing counsel and the CBI’s counsel.