GRAND PRAIRE -- What started out as a traffic stop on Texas 360 early Wednesday turned into the seizure of a canister filled with anhydrous ammonia and the arrest of three men, police said.
The ammonia which is an ingredient for methamphetamine was being transported in an illegal cylinder, police said.
The incident began shortly before 5 a.m. on Texas 360 and Riverside Parkway when a Grand Prairie patrol officer stopped a Jeep on a traffic violation.
"The officer saw a black jacket in the Jeep that appeared to be covering something," Grand Prairie Det. John Brimmer said Wednesday. "The officer asked one of the men to move the jacket and when he did it he hit a valve that caused some of the anhydrous ammonia to leak out."
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The man quickly turned the valve off, but the officer smelled the ammonia, Brimmer said.
The officer arrested the three men after getting them out of the Jeep, police said. The men -- two from Oklahoma and one from Grand Prairie -- were scheduled to be transported to John Peter Smith Hospital in Fort Worth for treatment.
Firefighters were called to the scene and the illegal canister was moved to an adjacent field near the Jeep, police said.
Police and firefighters remained on the scene.