Efforts are now underway to see if any more bank accounts have been broken into by the gang using the ‘phishing’ scam.
Garda Superintendent Vincent O’Brien confirmed they are investigating the on-line robbery of bank accounts.
The Letterkenny-based Garda also appealed to people to check their accounts of they bank on-line.
He explained that the gang use random numbers to access people’s laser cards and initially take just a couple of euro out to pay a small bill to another company.
But once the gang know they have access to the account then they begin to take out larger and larger amounts of cash.
Gardai in Donegal are liaising with specialist officers from the National Bureau of Criminal Investigation to track the cyber thieves.
It is believed the operation stretches over several countries.
It is unsure if people are covered by insurance if their bank accounts have been accessed.