The warehouse is located at Highway 249 at Bammel.
Video from SkyEye showed smoke coming from the building and damage as firefighters worked to extinguish any flames.
Fire officials told ABC13 that there were active rounds in the building during the fire and that you could hear some fireworks going off inside.
An ABC13 viewer captured the large amount of smoke billowing from the warehouse just moments after the fire started.
Deputies had blocked northbound and southbound traffic in the area and closed down the strip center.
Assistant fire chief An Nguyen said they transported one person with an injury.
The fire is under investigation.