The Oklahoma Bureau of Narcotics and Dangerous Drugs (OBN) suspects there are around 2,000 potentially illegal medical marijuana licenses in the state.

Agency spokesman, Mark Woodward said the licenses could have been obtained by fraud or are being used to cover illegal activities such as selling marijuana on the black market, reported Tulsa World.

“We’ve got close to 2,000 under investigation,” Woodward said. “We’re working with our partners to identify the criminal networks involved.”

He added that law enforcement is monitoring around 200 cannabis farms and is seeking to pinpoint the criminals behind them.

Though a recent incident where four people were killed on …

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