DUBLIN, Ohio -- The building housing Cardinal Health Inc.'s world headquarters was evacuated Monday morning after unknown chemicals were released inside. Chopper 4 NBC 4 reported that a gel-like substance was found on telephones, computer keyboards, and chairs inside the building's third floor. Several people reportedly drove themselves to hospitals, NBC 4 reported. Two of the people reportedly had symptoms of rashes on their arms. At least 12 others were being evaluated, NBC 4 reported. Watch NBC 4 and refresh nbc4i.com for additional information.