Bangkok, Thailand -- Eight people died and seven were injured when they unintentionally activated a fire extinguisher system that depletes oxygen levels.
The accident occurred on Sunday night at the Siam Commercial Bank. Contractors were working on the building's chemical fire extinguishers and mistakenly activated the system. This released chemicals that caused the oxygen levels to plummet.
"The work may have triggered [the] Pyrogen aerosol which, once it works, will decrease oxygen, that could cause people's injuries and death," the bank released in a statement.
Pyrogen makes an aerosol fire extinguisher that is used where water could damage equipment. It depletes oxygen to extinguish the fire.
On the Pyrogen website, they say that the aerosol does not deplete oxygen; however, exposure should be limited to five minutes.
Bangkok's Erawan emergency medical center reported that five people were killed at the scene and three died at the hospital. Those killed were contractors and a security guard.
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