Scottsdale police have arrested a group of people who they say are responsible for ATM thefts at three hotels totaling $100,000 since March.

The thieves would insert a device into an ATM's card reader and through the use of computer hacking skills, would manipulate the machine’s internal programming to causing the ATM to dispense more cash than it was supposed to.

Onik J. Darmandzhyan, 32, of Glendale and Michael J. DeMatteo, also 32, of Scottsdale, were booked for felony theft. Darmandzhyan also was booked on burglary and drug charges.

Tiffany L. McGrath, 24, of Peoria, was booked for investigation of felony theft, computer tampering and identity theft. The fourth suspect, 30-year-old Alissa M. Kerr, of Scottsdale, was booked on drug charges.

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