A commercial shipment of frozen strawberries coming from Mexico contained $12.7 million worth of methamphetamine, U.S. Customs and Border Protection announced Tuesday.

The alleged drug-smuggling operation was discovered at the cargo facility at the Pharr-Reynosa International Bridge in southern Texas on Feb. 16, a release says. Officers found 906 pounds of the drug concealed in a trailer, CBP says.

A 42-year-old man who is a Mexican citizen was arrested in connection with the seizure, according to the release.

An analysis of data from the southern border indicates the vast majority of narcotics enter through U.S. ports of entry.

According to U.S. Customs and Border Protection statistics, 87 percent of methamphetamine seized along the border in the first 11 months of the 2018 fiscal year was caught trying to be smuggled in at legal crossing points.

Contributing: Alan Gomez, USA TODAY; Rafael Carranza, The Arizona Republic