NBC Dallas-Fort Worth – A Tyler snake expert pleaded guilty in federal court Tuesday to smuggling seven Peruvian snakes into the United States by concealing them underneath his jacket.

William Lamar, 63, was caught with the snakes in August at Dallas-Fort Worth International Airport. He had purchased the snakes at a market in Lima, Peru, and flew with them in his jacket to Miami and then to DFW, where a Transportation Security Administration officer found them while Lamar was trying to board a commuter flight to Tyler.

Lamar is a partial owner of Colorado-based ecotourism company Green Tracks, according to a representative who answered the phone at the company’s listed phone number Tuesday. His biography on the company website states that Lamar also conducts research on reptiles and amphibians for the University of Texas at Tyler.

A university spokesperson confirmed Tuesday that Lamar has been an adjunct professor there but was not able to confirm his current status with the school.

Lamar is the author of at least three books on snakes and reptiles and has been a speaker at an event for the Austin Herpetological Society, among other events in that field.

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