PENDLETON, Oregon (Reuters) - Federal safety investigators joined Oregon state police on Monday in trying to find out what caused a tour bus to careen off a mountain highway and plunge down a snow-covered slope, killing nine passengers and injuring at least 27 others.
The charter bus was carrying 49 passengers, about two dozen of them holding foreign passports, through the Blue Mountains of northern Oregon en route from Las Vegas to Vancouver, British Columbia, when it crashed through a guard rail on Interstate 84 on Sunday morning, authorities said.