The Policía de Control de Drogas detained nine of 10 suspects Wednesday in a Puntarenas case that involves what officials say are four drug gangs working together.
The activities were described repeatedly in confidential calls to police, said the security ministry.
The activities were in Esparza, Barranca and Monteverde de Puntarenas. Distributed were mainly cocaine and marijuana.
The individuals detained Wednesday represent one organization, officials said, and they were working with three others.