The Public Safety Department said in a statement Monday that 38-year-old Roberto Cabrera arrived on a commercial flight Friday from Lima, Peru, when authorities noticed the bulge and conducted a body search.
The department says Cabrera was carrying the 6-inch (15-centimeter) titi monkeys in pouches attached to the girdle. Two of the monkeys were dead.
Cabrera was arrested on charges of trafficking an endangered species.
Cabrera told authorities he was carrying the monkeys in a suitcase but decided to put them in his girdle "so the X-rays wouldn't hurt them."