NHK reported [J] that the 30th office in Roppongi Hills’s Mori Tower had a minor fire burnt some carpet and card board boxes before 9 a.m. today November 27th.
Floors between 26th and 30th are used by Google Japan. (office visit report by AKIRA DRIVE)
Roppongi Hills is one of the Japanese IT centers, having Apple Japan, Gree, etc.
[Update] Sankei’s follow-up [J] tells that the cause might be a crystal ball in the Google Japan’s office. Crystal Ball!? Do they need to predict something by crystal reading?
[Update 2] Google Japan PR denied their having crystal ball in their office in reply to Sports Hochi [J]. Hochi says that the crystal ball info was from Azabu police department.