Complex sentence: On November 8,1992 Sinaloa Cartel struck out against the Tijuana Cartel at a disco in Puerto Vallarta, Jalisco, where eight Tijuana Cartel members were killed in the shootout, the Arellano-Félix brothers having successfully escaped from the location with the assistance of Barron.
Split into simpler sentences: On November 8,1992 the rival Sinaloa Cartel struck out against the Tijuana Cartel at a disco in Puerto Vallarta, Jalisco. Eight Tijuana Cartel members were killed in the shootout but the Arellano-Félix brothers successfully escaped from the location with the assistance of Barron.