The remaining eight passengers, including two Malaysians believed to be brokers arranging jobs for the migrant workers, sustained injuries. Two Cambodian women, identified as Chao Lee and Mom Him, are in intensive care.
The van was transporting legal migrant workers from Sa Kaew province to Sungai Kolok, and police believe the driver was tired and had dozed off, leading to the crash.
Police said five of the victims died at the scene and two succumbed to injuries at the Namom Hospital.