U.S. Customs and Border Protection announced the thwarting of a large smuggling effort attempting to bring over roughly $1.4 million worth of liquid methamphetamine into the United States.

The seizure took place on Oct. 3 when an individual, identified as a 49-year-old woman, attempted to apply for entry into the U.S. through California's Otay Mesa cargo facility, according to a Tuesday news release.

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She presented a valid B1/B2 border crossing card, but officers with CBP called for an inspection of her commercial tractor.

Concealed in the vehicle's fuel tanks, one officer found more than 940 pounds of liquid methamphetamine, and at least 30 five-gallon buckets were removed by CBP officials.

“Our officers are 100% committed to safeguarding our borders and are dedicated to disrupting drug trafficking organizations,” Otay Mesa Port of Entry Director Rosa Hernandez said.

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The exact street value of the liquid methamphetamine was estimated to be around $1,413,180.

Following the search, the driver was taken into custody by special agents with Homeland Security Investigations, and CBP seized the narcotics.