.TIJUANA, Mexico (AP) – Massive gunbattles broke out between suspected drug traffickers who fired at each other while speeding down heavily populated streets of this violent border city early Saturday, killing 13 people and wounding nine. All of the dead were believed to be drug traffickers, possibly rival members of the same cartel who were trying to settle scores, said Rommel Moreno, the attorney general of Baja California state, where Tijuana is located.