How did a Cop get caught smuggling in a Mexican National?

"LAPD Officer, Girlfriend Indicted In Federal Court For Trying To Smuggle Mexican Citizen Into U.S."

According to court documents, Quezada drove his 2014 Nissan Juke with Godinez in the passenger seat through the Otay Mesa Port of Entry on March 14 at about 6:30 p.m. and told a Customs and Border Protection office they had nothing to declare. The couple was referred for a more intensive inspection, during which officer detected something unusual in the rear cargo area.

Antanasio Perez Avalos, a 26-year-old Mexican national, was found in the compartment in the spare-tire area, federal officials said. All three were taken into custody and interviewed.