The accused, Dinesh Kumar Lal, made multiple withdrawals from a particular ATM in Rajouri Garden after he discovered a fault in the machine due to which it would take the money back if someone failed to pick the cash from the dispenser within a stipulated time.
He had made 232 transactions in the past six months.
He would wait till the last moment to pick the notes from the cash dispenser and at the same time block the sensor of the ATM machine either by cards or currency notes to make it an "unsuccessful" transaction, a senior police officer said.
"Despite receiving money from the ATM, he used to lodge complaints in the banks alleging non-receipt of amount. Subsequently, the amount was credited in the bank account of the accused. He had opened more than 10 accounts in various banks and embezzled around Rs 22 lakh," the officer said.
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Dinesh is an MBA from Sikkim Manipal University and is currently working in cash management firm Securitrans India Private Limited. He had earlier worked with Brink Security.
The investigation was taken up in the case following a complaint from Union Bank of India, Rajouri Garden.
Following interrogation, the accused was arrested yesterday, the officer said.