Flowers and veterans flags were taken from gravestones at the Greenwood Township cemetery.
Robin Hartoon, the township supervisor, said they noticed the missing flowers and flags Tuesday evening.
Some items were later found around the cemetery, while others were found in a man's truck.
Hartoon said as far as she is aware, no charges have been filed.
Township officials are now asking those who had placed flowers and flags on gravestones to come forward and claim them, to ensure they are back on the graves in time for Mother's Day.