Two tourists have died in a car crash near Pelorus Bridge in Marlborough.
The crash happened on the Nelson side of the bridge on State Highway 6 shortly after 1pm on Wednesday.
Police said a driver and back seat passenger in one vehicle died. Both were male.
A female driver and a front seat passenger of a ute have been taken to Wairau Hospital with serious injuries.
Senior Sergeant Peter Payne, of Marlborough, says it appears that one of the vehicles crossed the centre line. Conditions at the time were atrocious, with torrential rain and low cloud.
Police are working to formally identify those who died.
Meanwhile, one lane of the road has reopened and drivers have been urged to take extreme care.