Pol Captain Somphok Srichuchit contacted Muang Trat district chief Weera Reukwanichakul and Trat disaster prevention and mitigation official Pairat Soisaeng to help inspect the cut-up banknotes.
They were taken to the Trat Finance Office to determine if they were authentic or fake.
Residents had complained about someone disposing of toilet-cleaning liquids and they found both chemicals and the shredded banknotes, the authorities said.