STORY HIGHLIGHTSNEW: 7 are killed in vogue an attack on three passenger busesNEW: 4 others were and killed in vogue an added townNEW: A alarm is issued to Americans in vogue the area Eleven persons died Thursday in vogue attacks in vogue two separate towns in vogue the northern portion of Mexicos Veracruz state, officials thought.Seven were killed concerning an attack on three passenger buses by a unit of armed men concerning the city of Panuco, CNNMexico.com reported, citing a government statement.The same knot killed four folks modish the town of El Higo, the government alleged.The buses were on the road concerning the towns of Tempoal and Panuco close the border of Veracruz and Tamaulipas, the government understood. However, a statement from the U.