12 people mysteriously fell ill at a Tennessee Walmart distribution center after exposure to unknown powdered substance.

On Monday night at the Walmart Distribution Center on Dixon Boulevard in Lebanon, Tennessee 12 people mysteriously became sick.

The 12 people began to experience symptoms related to nausea after a small amount of an unknown powdered substance spilled out inside two semi-trailers.

Wilson County EMA treated 10 of the people who were evaluated and released after they were decontaminated.

The other two people sought treatment at a nearby hospital after they left the scene.

Authorities established a perimeter around the facility as hazmat crews worked to identify the substance, and worked overnight to clean up the site.

In an update on Tuesday morning, officials said no hazardous materials were identified at the scene.

At this time no further details have been released.