Police in Puerto Rico say they have seized $500,000 in cash during a routine traffic stop.
Police said they stopped an erratic driver on Wednesday who told authorities he had a bag full of money inside the car.
The authorities did not release further details and said the investigation is ongoing. No one has been arrested.
Four other similar seizures have been reported this year.
Federal agents in late July seized more than $200,000 in cash from the roof of a car bound for the Dominican Republic. In February, agents detained two men in a taxi with $580,000 in suitcases. Local police stopped a suspect in February with $670,000 stuffed inside beer boxes, a month after they had seized more than $1 million in cash from another driver.