The Spring Fire Department shared to X, formerly Twitter, shortly before 8 p.m. that fire crews from Klein, Ponderosa, The Woodlands, South Montgomery County, and Tomball Fire were all assisting.
At one point, Transtar camera footage appeared to show smoke coming from the scene.
Officials did not say how the fire started or if anyone was injured.
Eyewitness News is continuing to gather facts on the story.
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