WWE.com posted the following regarding the Raw set catching on fire at the US Bank Arena prior to tonight's episode of RAW.
CINCINNATI – During rehearsal for tonight’s Monday Night Raw at the US Bank Arena in Cincinnati, there was a minor incident involving the show’s pyrotechnics. As a precaution, the limited number of people in the building during the incident were successfully evacuated, and the fire marshal has given a safety clearance for the show to proceed as scheduled at 8/7pm CT . There were no injuries.
Click here for the WWE.com article.