Published: Nov 16, 2011 11:38 PM EST

WEST PALM BEACH, Fla. (AP) - A commercial passenger plane was evacuated at Palm Beach International Airport after a suspicious substance was reported.
    
Airport spokeswoman Cassandra Davis says passengers were preparing to take the Southwest Airlines flight to Baltimore Wednesday afternoon when they were ordered off the plane.
    
Palm Beach County Fire Rescue crews responded to the plane, and hazmat teams were investigating.
    
It wasn't immediately clear if the substance on the plane was dangerous.

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