Loss of student list etc. in Municipal Junior High School's graduation excursion

During his instruction on a graduation excursion (Hakkeijima Sea Paradise in Yokohama), a teacher at Municipal Junior High School (Kanazawa Ward) had lost five printed materials, including the third grade student list. All the teachers who led during the day searched the facility, but could not find it and submitted a lost property report to the police, but as of February 26, it has not been found.