Warning: The video contained in this article may be disturbing to some. Viewer discretion is advised.

A CCTV video showing the final moments of a boy before he drowned in a public pool in China has emerged online.

The footage, which first went viral on Chinese social media, shows the eight-year-old boy flailing his arms in desperation as he submerges underwater without anyone noticing.

The incident reportedly occurred on Aug. 14 inside a packed swimming facility in the city of Lianyuan. However, despite the number of adults and children in the vicinity, the drowning child’s struggles went unnoticed for over a minute.

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The clip captured the moment the boy dives into the pool where others are seen swimming nearby. A man in a white shirt is seen standing on one side of the pool, but it is unclear whether he was a lifeguard or someone accompanying another young swimmer.

As the boy struggles to keep his head above water, he desperately moves his arms in a panic, splashing the water around him.

During the boy’s ordeal, another child approaches the side of the pool near the boy but leaves immediately after dipping his feet in the water.