The following is from FOX19.com:
CINCINNATI, OH (FOX19) - US Bank Arena is being evacuated for a fire on the stage at the WWE Raw SuperShow on Monday night.
The small fire broke out around 6:30 p.m. It is believed pyrotechnic effects went wrong. Everyone is being evacuated at this time.
FOX19 has a crew on the scene and will give updated information as soon as it becomes available.
Chris Jericho just posted the following video on Tout, showing a fire on the main stage: