A former People’s United Bank teller in Trumbull is charged with stealing customer information to create counterfeit checks.

Robert Walker of Bridgeport was arrested Aug. 18. He was a teller at the Peoples United Bank branch at Stop & Shop in Trumbull. Walker is charged with trafficking of personal identifying information, first degree identity theft, second degree identity theft, first degree larceny, conspiracy to commit first degree larceny and conspiracy to commit second degree forgery.

The Monroe Police Department reportedly received a complaint on July 28 from a  resident who reported five, high-dollar counterfeit checks had been drawn from her People’s bank account. The total loss reported was more than $23,000. The investigation led police back to 25-year-old Walker.

During the investigation, additional victims were identified from the region. Police said Walker would process an actual check and observe the balance of each account he came in contact with, police said. If the record system showed the account had a large enough balance, he would document the checks’ information, which would later be used as the template for counterfeit checks, they said. The counterfeit checks would then be given to “runners” that would return at a later time to the same teller and cash them.

Following his arrest on Aug. 18, Walker posted his $50,000 bond. He is due in court Aug. 27.

According to Monroe Police, People’s Bank responded to the incident, stating, “This was an isolated event with a single teller. The bank has spoken to all affected customers and has reimbursed them for any loss. The employee has been fired.”

The investigation was conducted with the assistance of the Peoples United Bank Fraud Investigators and the CT Financial Crimes Task Force and US Postal Investigators.