WESLACO – A Rio Grande Valley vape shop owner defends his products, blaming "street-made" THC cartridges for the mysterious illnesses associated with vaping.

The nationwide death toll linked to vaping rises and now stands at nine.

Jesus Martinez tells us every product on his shelf has a certificate of analysis, breaking down what that product is made of.

He explained a high demand for THC cartridges is creating a market where people are buying without knowing what they're getting.

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