Judicial agents blame a dispute between two merchants for the death of one Monday morning.
The Judicial Investigating Organization said that Mario Villarevia Carrillo, 65, died from stab wounds in Belén de Carrillo.
A coworker, Álvaro Scott Fray, 47, was taken into custody.
The two men were in a vehicle with another individual when they began arguing, judicial agents said. The vehicle stopped and the pair continued the disagreement outside.