Kolkata: Officials from the Central Bureau of Investigation (CBI) reached TMC leader Abhishek Banerjee’s residence on Tuesday to question his wife Rujira in the coal smuggling case. West Bengal Chief Minister Mamata Banerjee visited nephew Abhishek Banerjee’s house in south Kolkata’s Harish Mukherjee Road minutes before the CBI team arrived. Abhishek Banerjee’s wife Rujira was grilled by the CBI in connection with the coal scam case. Also Read - Won't Be Cowed Down, says Abhishek Banerjee After CBI Summons His Wife In Coal Smuggling Case

The CBI reached Abhishek Banerjee’s residence just before noon and the examination went on for around an hour, sources said. The CBI team left around 1.15 pm amid a heavy police presence. Also Read - CBI Summons TMC Leader Abhishek Banerjee's Wife in Coal Smuggling Case Weeks Ahead of Bengal Polls

The agency sought the examination of Rujira Banerjee to ascertain the details of her bank transactions, suspecting a connection to the proceeds of the illegal coal excavation money, sources said. Also Read - Film Producer Bunty Walia’s Father Pirthi Paul Singh Passes Away, Abhishek Bachchan And Other Celebs Attend Funeral - PICS

The CBI’s visit to Abhishek’s residence comes after Rujira told the central agency that she will be available for examination between 11 am and 3 pm on February 23, replying to a notice that the sleuths had hand-delivered her on Sunday.

On Monday, the CBI examined Rujira’s sister Menaka Gambhir in connection with the same case.

Two woman officers of the CBI visited Gambhir’s residence off EM Bypass and had examined her for nearly three hours.

The developments come months ahead of the assembly elections in the state with Trinamool Congress alleging it to be a political vendetta.

The CBI on November 28 last year carried out a massive search operation in a number of locations across four states — West Bengal, Bihar, Jharkhand and Uttar Pradesh — after registering a case against one Anup Majhi alias Lala.

It is alleged that Lala, the alleged kingpin of the scam, is involved in illegal mining and theft of coal from leasehold mines of ECL in Kunustoria and Kajora areas, sources said.

(With PTI inputs)