A 41-year-old teacher, identified as Keisuke Tsuguno, has been taken into custody on suspicion of violating laws prohibiting the production of sexually explicit images. Authorities allege that Tsuguno filmed the video in question and distributed it to a private online group composed of teachers.
Although Tsuguno had no personal connection to the four teachers arrested earlier, the video he shared was found stored on one of their smartphones. This discovery ultimately led police to uncover his involvement.
Investigators believe that approximately 10 teachers from elementary and junior high schools were participating in the online group where such explicit material was exchanged.
The investigation is ongoing as authorities work to determine the full extent of the sharing and whether additional arrests will follow.
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