India, Jan. 14 -- Delhi Police has frozen Rs 1.9 crore of the Rs 14.85 crore allegedly duped from an elderly NRI doctor couple in a digital arrest scam, even as investigators found that the fraudsters routed the money through more than 700 mule accounts spread across multiple states.

Police said the funds were first transferred into seven primary bank accounts located across Gujarat, Assam, West Bengal, Uttar Pradesh, Maharashtra, Delhi and Uttarakhand. From these, the money was rapidly dispersed into another 200 to 300 accounts before being further layered into several more accounts.

"This multi-layered mule account network has significantly complicated the money trail," a senior police officer said. Specialised teams are tracking the ...