A resident in a Far North town has described seeing a "pool of blood" on the road after a hit and run.
Emergency services were called to the Far North town of Ōkaihau late on Tuesday night.
"We believe the collision between a cyclist and vehicle has occurred between 10pm and 10.15pm on that road," Detective Senior Sergeant Kevan Verry said.
"Tragically, it has resulted in a 19-year-old dying from his injuries at the scene."
Police said they were still looking for the person responsbile.
"A young man has lost his life, and it's important that anyone in the community with information does the right thing and speaks up now," Verry said.
Police, Fire and Emergency New Zealand and St John were called to Settlers Way, the town's main street, by residents, Verry said.
The fatal hit-and-run has shocked residents in the small, close-knit town, which is located on State Highway 1 about 20km west of Kerikeri.
One resident told RNZ she saw a pool of blood on the road outside Ōkaihau College on Wednesday morning, and a second patch about 50 to 100 metres away marked with neon spray paint.
She said she saw police speaking to a staff member at the college, which was due to reopen on Friday after the summer break.
Another resident told RNZ police had gone door-to-door at businesses, asking for information and any CCTV that might have captured the car.
Officers set up a checkpoint at the start of Settlers Way, opposite Two Ponga Park, and were stopping every car to ask the occupants if they knew anything about the hit-and-run.
Verry said police were searching for a car with obvious signs of damage, and urged anyone with information to speak up.
A crash investigator examined the scene in the early hours of Wednesday morning, Verry said, and a criminal investigation was underway.
"Detectives are working to piece together who is responsible. Police will be in the Ōkaihau township as part of our investigation, seeking witnesses and further information."
Verry said Victim Support was helping the cyclist's family.
"Our thoughts are with the family at this difficult time and with what they are going through."
Anyone who witnessed the lead-up or aftermath of the hit-and-run, or who had any information, should contact police, Verry urged.
They could contact police online or call 105, quoting reference number 250129/0360.
Information could also be passed on anonymously via Crime Stoppers on 0800 555 111.
Ōkaihau has a population of about 370, according to Census data, but is a service town for the wider area with primary and secondary schools, two dairies, two cafes and other businesses.
It is an important stop on the popular Twin Coast Cycle Trail from the Bay of Islands to Hokianga.
Sign up for Ngā Pitopito Kōrero, a daily newsletter curated by our editors and delivered straight to your inbox every weekday.