Saturday 14 January 2017 shortly before 9 pm, the roof of the Česká Třebová gymnasium in the Czech Republic collapsed during a floorball match. Almost 80 people were in the room at the time of the accident, but fortunately all had time to flee. Two of them were only slightly injured during the evacuation of the gymnasium. That night, the roof was covered with 25 centimeters of snow before collapsing. An investigation is under way to determine the exact causes of this collapse.