U.S. Customs and Border Protection ( CBP ) officers seized nearly $600,000 worth of undeclared currency during an outbound inspection.

According to the CBP , the incident occurred Thursday afternoon at the San Luis port of entry. A 37-year old man was southbound into Mexico when officers searched his truck and discovered the money hidden in a spare tire. The currency totaled more than $559,000. The man was turned over to ICE Homeland Security Investigations.