A RESTROOM at a Walmart in eastern Indiana, in the U.S., has been closed indefinitely after an employee discovered a working meth lab inside.

    State police said a Walmart employee alerted police after seeing a man he described as suspicious enter the restroom about 11:30 p.m. Thursday with a backpack and then leave without it.

    Police were called, and determined that inside the backpack were items that constituted a miniature meth lab, with chemicals used to “cook” the drug were being mixed in containers.

    State police said people who make methamphetamine are leaving “the deadly explosive chemicals in public places to return later to get the finished product,” rather than risk explosions and contamination at their own homes.

    The discovery of such “labs” is becoming routine for authorities.

    The fastest way to make meth is referred to as “shake and bake,” where the chemicals are mixed in two liter bottles, and later cooked in the oven until it crystallizes. However, mixing the chemicals runs a huge risk of explosion, with the blast of one bottle capable of killing someone.

    The Star Press reported that members of a state police meth suppression team removed the dangerous chemicals.

    Delaware County Health Department inspectors closed the restroom and a nearby women’s restroom until they could be “decontaminated” by a professional cleaning company.

    An investigation into who left the backpack in the restroom is now under way.

    Brian Nick, director of National Media Relations for Walmart, said the store’s surveillance video was being provided to police for that probe.(SD-Agencies)