Police have been at the scene of a serious single-vehicle crash near Mount Cook.
"Initial reports indicated there were serious injuries and the Serious Crash Unit was advised," police said in a statement.
They'd been called to the scene on Mount Cook Rd (State Highway 80) about 12.05pm and have since confirmed one person has died and that another is in a critical condition while the other has been seriously injured.
Waka Kotahi NZ Transport Agency had closed the highway though one lane has since reopened..