UPDATE: New developments have emerged in the USPS mail tampering case out of the small town of Upland.
Officials with the USPS report there have been no findings of wrongdoing regarding mail tampering at this time.
Post office operations manager Ed Goforth said "[I] don't know if the investigation is still ongoing, but there hasn't been any complaints lately."
He did confirm that one package was damaged during handling in the processing center but not at the Upland post office
When asked if the FBI was involved in this scenario, He said he was unsure and would not comment further due to his uncertainty.
Authorities with the FBI said that they would "not confirm or deny" their involvement.