tl;dr:

A senior high school student has died after an extinguisher exploded during a fire drill at his campus in Thailand. Twenty-one others at Rajavinit Mathayom School in Bangkok were injured in Friday’s incident, said the city’s governor. The explosion had sent the extinguisher flying towards the victim, who was about 10 metres away. Rescuers said the extinguisher may have been defective because of sun or heat exposure. Officials added that the extinguishers used in the drill have all been sent to the police’s forensics division.

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