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California 'mass casualty' crash involved smugglers, illegal immigrants, Border Patrol source says
Two vehicles crammed with illegal immigrants inside had driven through the ten-foot wide hole in the early morning hours of Monday's midnight shift, sources say, somehow evading a mobile camera system set up nearby. The sources added that the border patrol was not looking for the smugglers until they were notified by the Imperial County Sheriffs Office about the crash, which occurred about 8 miles north of where the fence was cut.
https://www.foxnews.com/us/california-multiple-people-killed-bus-truck-collision