The family of a Northland woman killed in her home are assisting police to help reconstruct the crime scene.
The body of Barbara Julian, 70, was discovered in her Kaitaia house on Wednesday evening.
Detective Senior Sergeant Karen Malthus says a 17-year-old male has been arrested on an unrelated matter but is considered a person of interest to the homicide inquiry.
Ms Malthus says relatives of Mrs Julian will help officers search for anything out of the ordinary on Saturday.
Mrs Julian's funeral will be held on Tuesday.