Osaka police investigate spray incident at middle school leaving 20 with throat pain
Approximately 20 students and others report symptoms following a reported incident on 17 July 2026.

Osaka Prefecture Police are investigating an incident at Osaka City Third Middle School in Kaisei City, where an unknown individual allegedly sprayed a substance, causing health concerns among students and staff. The report was received by authorities at approximately 10:30 am on 17 July 2026, according to NHK News Japan.
Approximately 20 individuals, including students, have reported symptoms such as throat pain following the alleged spray incident. While the initial police report mentioned injuries, the specific nature of the substance and the exact medical diagnoses for those affected have not yet been confirmed.
The identity of the person responsible for spraying the substance remains unknown. Police are currently treating the event as an allegation and are conducting inquiries to determine the cause of the symptoms and the nature of the material involved.
The incident has raised questions regarding safety protocols at educational institutions in the region. Osaka City Third Middle School is located in Kaisei City, and the school has not yet released a detailed public statement regarding the specific safety measures implemented in response to the event.
As investigations continue, the number of affected individuals may change as further reports are received. Authorities are urging anyone with additional information regarding the incident to come forward to assist with the ongoing inquiry.


