Police are seeking witnesses to a crash in Piarere that claimed the life of a teenager last week.
The crash happened at around 8:25pm on Friday, on State Highway 1 between State Highway 29 and Tirau.
A 2006 silver Ssangyong Rexon carrying seven people lost control in the southbound lane and overturned, killing 16-year-old Aucklander Robert Mark Butland.
Police say one or more vehicles travelling in the same direction may have been overtaken by the car shortly before it crashed.
The drivers of these vehicles are urged to come forward.
Anyone with information is asked to contact Senior Constable Steve Maddren on (07) 885 0100.