A 33-year-old woman from the Esgenoôpetitj First Nation was arrested Wednesday in relation to the death of 34-year-old Christopher Dedam, also of Esgenoôpetitj.
RCMP are now saying Dedam's death on Tuesday, first described as suspicious, was a homicide.
RCMP spokesperson Cpl. Jullie Rogers-Marsh said the woman has been remanded into custody on an unrelated matter.
"No charges have been laid at this time in relation to the homicide investigation," Rogers-Marsh said Thursday.
She said she could not confirm if there were other suspects in the case.
"We're certainly continuing to investigate and determine exactly what happened and who is involved and whether there's other people other than the individual that was arrested."
RCMP were called to the community about 38 kilometres northeast of Miramichi at 10:15 a.m. Tuesday.
When they arrived at a residence on Micmac Road, they found a man dead.
An autopsy will be held to help determine the exact cause of death.
The New Brunswick RCMP's Major Crime Unit is continuing to investigate Dedam's death.
RCMP say anyone with information about the incident is asked to contact the Major Crime Unit or Crime Stoppers.