Officials said a bus traveling on a mountain road collided with a truck in thick fog and plunged over a cliff, killing 12 people and injuring 14. The Veracruz state public safety department said the bus was traveling between the cities of Misantla and Xalapa when it hit the truck coming from the opposite direction Saturday night. The bus flipped several times and fell into a canyon about 300 feet (100 meters) deep, AP reported.