Officials say a speeding passenger bus fell off a highway into a ravine on Wednesday in southwest Pakistan, killing at least 28 people and injuring 20.Officials say a speeding passenger bus fell off a highway into a ravine on Wednesday in southwest Pakistan, killing at least 28 people and injuring 20.Read Moref3cdaa2b-b3b5-5a1f-a768-9434d58b87c6, fox-news/world/world-regions/pakistan, fox-news/topic/associated-press, fox-news/world/disasters, fox-news/world/disasters/disaster-response, fox-news/entertainment/events/departed, fnc, fox-news/world, article, Associated PressFOX News : World