A Greyhound passenger bus crashed into three tractor-trailers parked along a highway exit to a rest area early Wednesday in southern Illinois, killing three people and injuring 14 others, some seriously, state police said.

       The St. Louis-bound bus was traveling westbound along Interstate 70 in Madison County around 1:55 a.m. when it crashed into the three semis, Illinois State Police said, citing an initial investigation.

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       Four people were taken to the hospital by helicopter and at least 10 others were taken by ambulance, state police said in a news release. Police did not immediately release details about those who were injured and killed.