A Good Samaritan who ran to the scene of a fatal road accident in Waikato on Saturday night is the cousin of one of the victims.
Four people died when a white Toyota, believed to be carrying a group of French tourists, collided with a black BMW on State Highway 2 near Netherton.
Police are investigating and the cause of the crash is not yet known, but visibility was poor with heavy fog.
Kenny Growden, who lives near the scene of the crash, ran to the scene to help after hearing a loud bang.
He has since confirmed to Newshub that the sole driver of the BMW was in fact his cousin, Reece Growden-Olsen.
Mr Growden says he didn't realise at the time that it was his distant cousin involved in the crash.
He told Newshub the family are still in shock, and didn't want to make any further comments at this time.
Facebook posts offering condolences to Mr Growden-Olsen's family have been popping up on social media.
One post said he was to become a father with his fiancée Pounamu King.
A post from Mr Growden-Olsen's mother, Deane Olsen, called for a petition to regulate tourist drivers who arrive in New Zealand.
The French tourists, three of whom died in the accident, had reportedly been driving south from Auckland after just arriving in the country.
A petition bearing almost 9000 signatures was presented to Parliament earlier this year, calling for foreigners to sit New Zealand driving tests.