Police are responding to a report of two vehicles in water near Blenheim.
Emergency services received a call at about 7pm on Tuesday that an incident had occurred at Taylor Pass Road near Maxwell Pass Road and Awatere Valley Road, Marlborough.
A spokesperson told Newshub that police have been dispatched but haven't arrived at the scene.
Fire have been dispatched, but have not arrived.
It is understood ambulance are also responding to the event.