The nearly 37 pounds of cocaine was hidden in panels of the man's 1999 Jeep Cherokee, officials said.
The Los Angeles Times said the 29-year-old Calexico resident, whose name was not released, was stopped while trying to enter the United States from Mexico Tuesday morning when a customs officer noticed he was nervous.
Drug-sniffing dogs and X-ray equipment found the cocaine, the Times reported.
The man was being held at the Imperial County Jail.
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