Published: May 24, 2013 11:34 AM EDT

ATLANTA (AP) - Authorities say 18 people have been taken to the hospital following a crash between a hotel shuttle bus and a tractor-trailer near Atlanta's airport.
    
Atlanta Fire Rescue Department spokeswoman Janet Ward says the accident happened around 10:30 a.m. Friday. She says it's not immediately clear what caused the accident.
    
Ward says there were 18 people on the bus at the time of the accident. Nine were taken to Grady Memorial Hospital, including one who was in critical condition. The other nine were taken to Atlanta Medical Center.
    
Ward says the bus served Hampton Inn, Fairfield Inn and Hilton hotels and was headed to Hartsfield-Jackson Atlanta International airport.
    
Overhead shots from WSB-TV show the shuttle ran into the left side of the trailer that was stretched across the road.

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