Boardman police and federal authorities are investigating more reports of mail-related check fraud, including two reports filed this week involving residents who mailed payments at local collection boxes.

A Paxton Road resident reported to police on Monday that two checks mailed Jan. 21 at a collection box on Market Street and Buena Vista Avenue were changed and cashed. The checks, originally intended for a credit card company, were made out to a different name for a total loss of more than $1,800. Investigators searched a crime computer for the names and say they have identified several potential suspects in the Cleveland area.

In a separate report also filed Monday, another resident told officers that a check for more than $1,500 was altered after he mailed it in late December. The man said both the payee and the signature were changed before the check was cashed. Authorities say the man wasn’t sure if the check was mailed at the Boardman or Cornersburg post office.

The reports follow a trend of similar thefts in the township. In January, the United States Postal Service Office of Inspector General confirmed it was reviewing reports of stolen checks mailed at the Boardman Plaza Post Office. At that time, victims reported that checks mailed in December were increased to higher dollar amounts and made payable to strangers.

Postal Inspector Dylan Louis said the agency is working to protect mail through Project Safe Delivery, which includes installing high-security collection boxes and electronic locks.

Authorities recommend that residents monitor their bank accounts and credit reports regularly. Anyone who suspects their mail has been stolen should contact their bank and the Postal Inspection Service.