In a massive operation, police busted at least three call centres in Mira Road locality and detained over 750 people allegedly threatening US and other foreign nationals, police said here on Wednesday.
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The raids, by a posse of around 200 police personnel, started late on Tuesday and continued till Wednesday.
According to police, the call centre employees reportedly posed as US Tax Department officials, forced the victims to part with their confidential bank and financial details, or threatened them with penal action.
After the scared victims provided the details, the call centre employees managed to siphon off money from their accounts.
As per tentative estimates, the daily turnover from these fraudulent practices is pegged at a whopping Rs 10 million per day (Rs 1 crore daily), even as a probe is on to figure out the exact amounts that may be involved.
The raids, directed by Crime Branch DCP Parag Manrere were simultaneously conducted at a multi-storied building and in the neighbourhood of the middle-class Naya Nagar locality of Mira Road with police collecting telephone and computer records and other evidences.
According to police, many of these call centres, targeting mainly US citizens, besides some other countries, were owned by different persons and operational since over six months.
The data base from these call centres contained personal and financial details of several thousands of foreign and even Indian nationals which were utilised to trap their victims.
Thane Police Commissioner Param Bir Singh said it is a matter that involves multiple crimes like extortion, forgery and cheating operated internationally.
"The modus operandi of these call centres is identical but their owners are different with the involvement of hundreds of employees. We shall verify the role and antecedents of each and every person engaged in this racket," Singh told mediapersons.
To a query, he said that if any foreign agency approaches, the Thane police would be prepared to share details of the crime with them.
The police is also seeking assistance from the Cyber Crimes Cell, IT experts and internet companies as VOIP was used to make internet voice calls to the victims to avoid tracing back the calling numbers, an official explained.
Many of the callers were given a short training in phone etiquettes and speaking in foreign accents to gain the victims' confidence before trapping them into parting with their personal details.