It's unclear what triggered the explosion, which occurred near a baseball field adjacent to the high school in Comanche, a town of about 4,300 people about 100 miles southwest of Fort Worth, fire department spokesman Lt. Marcus Nettleton said. The trailer was hooked to a pickup truck.
Members of the Kiwanis Club were setting up the fireworks for a Friday celebration. Nettleton said one club member, local chiropractor Russell Reynolds, died at the scene, and three others were hospitalized with serious injuries.
The club has organized the fireworks show for the past 24 years with no previous mishaps, Nettleton said.
Christine Perkins, executive director of the Comanche Chamber of Commerce, said Friday's Fourth of July events have been canceled. She said the fireworks show has been one of the largest in the region, drawing 15,000 people, many from metropolitan areas such as Dallas, Fort Worth, and Austin.
"We're still in shock," she said. "And definitely in a community our size, there will be some kind of ceremony" to recognize the victims, she said.
The agency has a permit on file that authorized Friday's pyrotechnics, said Rachel Moreno, spokeswoman for the fire marshal's office. The permit listed Reynolds as one of two pyrotechnic operators for the event. Moreno declined to release any additional information, citing the ongoing investigation into the explosion.
The Texas fire marshal's office and US Bureau of Alcohol, Tobacco, Firearms and Explosives are investigating, Nettleton said.
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