Well, it seems we’ve got all the bases covered with this one:

Police said Friday they have arrested and detained five people, including a Korean man with Canadian nationality, suspected of dealing marijuana in two separate drug rings.

Police also booked 31 others, including a 36-year-old college professor from the U.S., for investigation without physical detention for allegedly purchasing the drug from the arrested suspects, the Seoul Metropolitan Police Agency said.

Judging from the story, it seems it’s a case of English teachers smuggling pot to sell to mostly other English teachers. And the cops think there’s more:

Alleging widespread marijuana smoking among foreign teachers, the police said the country needs a more thorough system to identify illegal hemp use among native English-speaking teachers here.

“We plan to further broaden our investigation as there are assumed to be more hemp-circulation rings involving native teachers (of English),” a police official said.