One technique police officers use to keep drugs out of schools is to have a trained dog inspect the exterior of backpacks.
That is what happened Friday at two high schools where students had to line up while the drug-sniffing dog wandered among their backpacks. The dogs belong to the security ministry’s Unidad Canina.
In Heredia a dog managed to sniff out two marijuana pipes and six small quantities of the drug. The items were within a student’s lunch, and Fuerza Pública officers said they thought the student put them there when he became aware of the police presence.
In Santa Bárbara de Heredia, a dog encountered more pipes, more quantities of marijuana and cigarette paper for making marijuana cigarettes, said police. All of this was in one backpack, officers said.
Such dog searches are routine, and they sometimes are done during night classes with better results.