JOHANNESBURG - Five Mexicans and a South African are appearing in the Volksrust magistrate's court in Mpumalanga.
They were arrested last week when police shut down a Crystal Meth Lab worth R350-million.
Police acted on a tip-off about suspicious activities on a farm in Oudehoutkloof.
The informant reported a strange chemical smell on the farm, which raised suspicions of illicit drug manufacturing.
Preliminary investigations revealed the five foreign nationals are in the country illegally.
They are facing charges related to contravening the Drugs and Drug Trafficking Act, and the Immigration Act.