Hundreds of nails were also found in the grounds of elementary and junior high schools in Koto Ward and Kita Ward on the 31st. The boards of education in each district will now use metal detectors to check if there are any other nails buried in the ground.
In response to an accident at an elementary school in Suginami Ward, Tokyo, in which a student was seriously injured by a nail sticking out of the schoolyard in April, the Ministry of Education, Culture, Sports, Science and Technology (MEXT) has notified boards ofEducation nationwide to ensure safety inspections are carried out at each school.