During the Makuuchi dohyo-iri, a fire alarm sounded inside the arena. An announcement was made throughout the arena stating, "A fire has broken out on the second floor," and the reading of the rikishis' names was interrupted. Yokozuna Oonosato's dohyo-iri proceeded without any announcements, and the announcements resumed during Yokozuna Houshouryuu's dohyo-iri. According to the Kyokai, the cause was that a visitor attempting to enter a multi-purpose restroom accidentally pressed the red emergency button on a nearby fire hydrant. The venue's system switched to a setting that prioritized emergency broadcasts, and the disaster alarm system was activated. As a result, not only the announcements but also the air conditioning was temporarily shut off. The venue and the Kyokai confirmed through monitors and determined that there was no fire. An announcement was made throughout the arena stating, "We have confirmed that there is no fire." The matches proceeded as scheduled, and there was no major disruption among the spectators. The Kyokai has reconfirmed future procedures with the venue.
So a guy goes in for a dump and the all-newfangled Venue goes into panic mode..