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ROCKVILLE, Md. (WUSA9) -- Montgomery County officials say several people have been transported to a local hospital after a Hazmat incident at a building in Rockville.

Officials are on scene at 9171 Key West Avenue, where they were initially called for a gas leak and the building was evacuated until investigators could determine what was going on.

A spokesperson for Montgomery County fire and rescue services says it's believed an elevator malfunction may have resulted in a spill of some hydraulic oil and the resulting odor may have made several occupants of the building ill.

It's unclear at this time exactly how many people were transported to local hospitals.

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