Following the fatal collapse of a concrete wall at a school in Osaka, Japan, officials have admitted that they were warned about the structure three years earlier, but determined it was not a threat after they inspected it for cracks and hit it with a stick.
For more info, please read the original article by Japan Times:
https://www.japantimes.co.jp/news/2018/06/22/national/osaka-school-warned-three-years-ago-wall-crushed-girl-death-quake/#.Wy_R_qdKjIV