Feb. 1: Police today questioned Rose Valley boss Gautam Kundu's wife Subhra about her alleged links with an Enforcement Directorate (ED) officer probing the company's deposit default case.

During the three-hour interrogation at Subhra's South City apartment, she is said to have admitted that it was ED sleuth Manoj Kumar who had referred her to a chartered accountant in central Calcutta's Mangoe Lane.

Kumar has been taken off the Rose Valley probe and asked to return to the customs department, from where he had joined the ED on deputation.

"We asked her (Subhra) questions related to the investigation that followed a haul of Rs 1.42 crore in demonetised notes from three persons. If necessary, she will again be questioned," said Supratim Sarkar, additional commissioner (III), Calcutta police.

Sources said a list of questions was placed in front of Subhra, who has acted in films produced by Rose Valley, and was asked about her alleged proximity to Kumar.

"We produced an air ticket showing she and Kumar had travelled to Delhi together and a footage showing them in a hotel's reception," an officer said.

Sources said Subhra, whose husband is in custody since March 2015 in connection with the deposit scam, had not yet been questioned about reports that Rose Valley's money had been parked with the Mangoe Lane chartered accountant.

"We did not ask her leading questions today. It was the first day of interrogation. We will come to the key questions, including the volume of money she had parked in the Mangoe Lane firm's accounts, during next sessions of questioning," an officer at Lalbazar said.

In ED's Salt Lake office, assistant director Sumit Basu has taken over the investigation into the Rose Valley default scam.

"A team of ED officers from Delhi will visit the Calcutta office and go through the files of the case to find out whether Kumar tried to protect anyone," an officer said. "The authorities are taking the matter very seriously, as the allegation is about an investigating officer's proximity to the wife of a key accused."

A departmental inquiry has already been started against Kumar.

Sources at Lalbazar said sleuths were trying to find out how Kumar benefited by referring Subhra to the chartered accountant.

The alleged association between Kumar and Subhra emerged while the police were investigating the haul of Rs 1.42 crore in demonetised notes from three persons on December 16. The cops came to know that the money was being taken to the Mangoe Lane office.

While examining the documents and computers at the firm's office, the police came across two folders named Rose Valley and Madam Rose Valley. The accountant apparently told the police that the Madam Rose Valley folder had been created to keep record of Subhra's money transactions.

The sleuths suspect Subhra had parked around Rs 15 crore of Rose Valley's money with the accountant over the past six months.