Published: Mar 04, 2013 12:51 PM EST

ST. PETERSBURG, Fla. (AP) - Police say a St. Petersburg maintenance worker was severely injured while cleaning out a city garbage truck.
    
Police spokesman Mike Puetz says the truck's driver closed the vehicle's rear hydraulic door without realizing that the worker was still standing by the door.
    
Puetz says the door closed on the worker's upper body, causing severe trauma.
    
The worker was hospitalized Monday morning with life-threatening injuries.
    
Puetz says the accident is under investigation and the truck has been removed from the scene.

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