A restroom at a Indiana Wal-Mart has been closed, after an employee discovered a working meth lab inside. 

A Wal-Mart employee alerted police after seeing a man he described as suspicious enter the restroom with a backpack and leave without it, as reported by ABC 7.

Members of a state police meth suppression team removed the dangerous chemicals.

Health Department inspectors closed the restroom and a nearby women's restroom until they could be "decontaminated" by a professional cleaning company.

People who make meth are leaving leaving highly explosive chemicals in public places and returning for the finished product, rather than risk contamination or a explosion at their home.

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