Officials in South Africa discovered $20 million dollars worth of illicit drugs at a farm being used as a methamphetamine lab and arrested five North American citizens, according to a news release shared Saturday .

The South African Police Service received a tip-off about suspicious activities on a farm in Oudehoutkloof, Volksrust, about 150 miles from Johannesburg in the nation's Mpumalanga province. The person who submitted the tip reported "a strange chemical smell emanating from the premises," according to the police service.

When officials searched the farm, they found precursor chemicals used to make drugs, manufacturing equipment, a pellet gun loaded with blanks, and three live 9 millimeter rounds held by a farm caretaker.

Police also found about $20 million worth of crysta

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