CNN reports that a tour bus operated by USA Holiday slammed into the back of a tractor trailer, killing 13 and injuring 31 more. The bus was returning to Los Angeles from a casino Sunday when the crash occurred at approximately 5:15 a.m. The bus operator was killed and the truck driver was injured. The National Transportation Safety Board (NTSB) is expected to arrive at the scene of the crash Monday morning to investigate.
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