Police are calling for witnesses to a fatal crash between a car and motorcycle which occurred in Pukekohe on Monday 22 February.
A 47-year-old motorcyclist was critically injured in the crash and died in hospital on Friday 26 February.
"The motorcycle overtook a white vehicle near the intersection of Tuakau and Buckland Roads, immediately prior to the crash occurring," Inspector Alison Brand says.
"We are looking to identify the driver of this vehicle as it is likely they witnessed the crash."
The motorcycle collided with a blue vehicle pulling out of Tuakau Road.
"It is likely that the white vehicle continued travelling straight on Buckland Road."