A 14-year-old Mexican teen was caught at a U.S.-Mexico border checkpoint in California with three bundles of crystal methamphetamine strapped to his body, authorities said.

The boy was with two other minors and one adult, U.S. Customs and Border Protection said, when he approached the State Route 94 checkpoint in Jamul, east of San Diego, Monday night.

As border agents questioned the group, who were in a 2006 Volkswagen Jetta, a drug-sniffing K-9 alerted the agent.

MEXICAN NATIONAL PLEADS GUILTY TO ILLEGALLY ENTERING US 8 TIMES

A 14-year-old boy was caught at the U.S.-Mexico border with crystal methamphetamine strapped to his waist Monday night, authorities said.

A 14-year-old boy was caught at the U.S.-Mexico border with crystal methamphetamine strapped to his waist Monday night, authorities said. (U.S. Customs and Border Protection San Diego )

The group was moved to another area for a secondary inspection. They were searched and the packages of drugs were found on the teen's waistline, a news release said.

Another 49 plastic-wrapped packages were found in three backpacks inside the car. In total, agents discovered 54 pounds of drugs worth an estimated $102,000.

Border agents in California found $102,000 worth of crystal methamphetamine during a search of a group of four people that included three teenagers, U.S. Customs and Border Protection said.

Border agents in California found $102,000 worth of crystal methamphetamine during a search of a group of four people that included three teenagers, U.S. Customs and Border Protection said. (U.S. Customs and Border Protection San Diego )

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Authorities arrested the 14-year-old and a 16-year-old, both Mexican nationals. The driver, a 34-year-old man, and another 16-year-old, both American citizens, were also taken into custody.

Agents in the San Diego sector have seized 42 million worth of methamphetamine since Oct. 1.