Prime accused Indrani Mukerjea's lawyers are cross examining Rai at present.
Indrani's lawyer Sudeep Passbola today asked Rai why his address on the driving licence was different from that on his Aadhaar card, and whether he still has the documents of address proof which he had produced while obtaining the licence and the Aadhaar number.
"I don't remember," was all that Rai said.
Indrani, her former husband Sanjeev Khanna, and Rai, her then driver, allegedly killed Sheena, Indrani's daughter from an earlier relationship, inside a car in April 2012.
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The murder came to light three years later after Rai's arrest in another case, when he told the police about the 2012 incident.
Rai later turned approver and became a prosecution witness.
According to the CBI, which took over the case from Mumbai police, financial disputes led to Sheena's murder. Peter, a former media baron, was also arrested in the case.
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