Police are treating the death of a 9-year-old boy in Raetihi as suspicious, after prescription medicine was found in his system.
Detective Senior Sergeant Keith Borrell said the test results on Antony Herewini-Christensen were "only initial findings and we are not in a position at this stage to say what caused the death of Antony, as we are waiting on final test results".
Fourteen police staff are working on the investigation.
Antony was found dead at his home at 14 Duncan St, Raetihi, on November 30.
Mr Borrell said the police "are still in the process of interviewing Antony's family, who have been helpful.
"However, we still want to hear from anyone who may have some information on his last movements.
"If you know something, don't discount it. Please speak up."
Anyone with information relevant to the investigation is asked to contact the Ohakune police on (06) 385 0100.
Alternatively, information can be provided anonymously via Crimestoppers on 0800 555 111.
Duncan Metekingi, Antony's great-uncle, said the little boy's sudden death had rocked the small town.
"This is not something that happens here, you know.
"There have been police everywhere since it happened.
"There are detectives as well as ordinary policemen up and down the street."
Mr Metekingi, who lives two doors from Antony's home, said the boy had been complaining of a stomach ache about 10pm the night before he died.
Antony had a 5-year-old brother and two older sisters in their early 20s, Mr Metekingi said.
He said Antony's mother, Claudia Herewini, was no longer at the Duncan St home.
Over the weekend the town was very quiet, he said.
"Thank goodness the police gave everyone a rest, I think.
"Anyway, they were back today, especially in Duncan St, Seddon St and King St. They are asking people whether they had heard or seen anything that night."
Mr Metekingi said that in all the years he had lived in Raetihi he had never known anything like this and had never seen so many police.
"And I hope I never do again. This is terrible for all of us.
"Everyone is very unhappy. It's a sad time and a little boy is dead."