The cause of the accident is under investigation.
According to initial reports, the incident occurred while a group of workers were building a water plant of a Taiwanese-invested Formosa Project. The victims who died were identified as Bui Viet Thao, 23, from northern Ha Nam province and Nguyen Kim Tuan, 45, from Ha Tinh.
The three injuries are currently in critical condition and receiving treatment at Ha Tinh provincial hospital.
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