Federal law enforcement officers arrested a woman they said was carrying more than $532,000 in cash stuffed in a suitcase.

U.S. Customs and Border Protection said that the woman was pulled over on Interstate 5 in California when a K-9 alerted officers to a suitcase. When opened, agents said they found $532,596 they believe came from illegal drug sales, KTLA reported.

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The woman, whose identity wasn't released, was arrested on suspicion of smuggling and was placed in the custody of Border Patrol. The car and cash were seized, according to a press release from Customs and Border Protection.

Last year, officials said they confiscated $290,000 from a man who was also driving south on I-5 near Oceanside.

In August 2016, they made the biggest currency seizure in the San Diego area when they discovered two cars on the 15 Freeway carrying more than $3 million.