Police said earlier this week that at least two others were reported to have critical injuries.
The incident happened close to Kingston, near the intersection of State Highway 6 and Glen Nevis Station Road.
Images from the scene show seven rescue helicopters, and emergency services surrounding a bus. People could be seen being transported away on stretchers.
A witness told the Herald a car had gone head-on into a tourist bus with a trailer.
“The bus had rippled like a slinky.”
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