Minister of State for Finance Jayant Sinha told Rajya Sabha in a written reply that Singaporean authorities have also raised "certain queries" from India and have asked for a revised Letters Rogatory (judicial requests) in the case.
"Request for revised LR is under process," he said.
He said in response to a request to Interpol to issue a Red Corner notice against Modi, "certain queries were raised by the Commission for the Control of Interpol Files".
He said the ED had initiated a probe under the Prevention of Money Laundering Act against Modi based on a complaint of the Chennai Police here.
"The Directorate (ED) has conducted search and seizure operations at the office premises of certain companies. Documents collected so far from various authorities are being examined.
"Summons are being issued to the officials of the companies mentioned in the FIR registered by the predicate agency," he said.