Dozens of swimmers have been injured following a "tsunami pool" malfunction in China.
Video of the incident shows a large wave sweeping away swimmers in the crowded pool.
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Forty-four people were hurt in the incident, with five remaining in hospital with injuries including fractured ribs, according to The South China Morning Post, which quoted an announcement by the local government.
The event occurred on Tuesday (local time) at the Yulong Shuiyun Water Amusement Park in the northern city of Longjing, near the border with North Korea.
"According to the initial stages of the investigation, the incident was caused by a power cut that damaged electronic equipment in the tsunami pool control room, which led to the waves in the tsunami pool becoming too big and injuring people," government officials were reported as saying.
The park was closed following the incident while an investigation took place but has reportedly reopened again now.
Earlier this year two people died and 12 injured in another water park accident in China after falling off a slide in Sichuan province.