Authorities say Mack used his training to get around alarm systems at buildings monitored by his former companies, Kastle Security in Philadelphia and Electronic Systems in Woodlyn, Pa.
Police say Mack admitted to the crimes after he was arrested breaking into an office building in Plymouth Township.
On August 27th, police responded to the Plymouth Woods office complex for a report of a man trying to break into a vending machine. After a short foot chase, Mack was arrested.
Police say he had a screwdriver, hammer and latex gloves on him when he was arrested.
Investigators say Mack has been linked to burglaries and vending machine thefts in Montgomery and Chester Counties dating back to December, 2008.
Detectives also say they uncovered evidence that Mack stole electronics equipment, flat screen televisions, laptop computers, projectors and cash from vending machines. The total loss and damage of items and is approximately $40,000.00.
Mack was being held Thursday on $50,000 bail. A preliminary hearing is set for Sept. 18.
The Associated Press contributed to this report
