Mr Davis said the police were continuing their inquiries yesterday, including a scene examination at the address on Stanley St.
Interviews were also being conducted yesterday, Mr Davis said.
Reports of people running from the area on Thursday evening have not been confirmed and Mr Davis said police were appealing for any information anyone may have in relation to the incident.
Dannevirke residents, startled by the sight and sound of seven police cars racing to the scene, said they went home and locked their doors.
Rawhiti St resident Paddy Mullholland said it was reassuring to see so many police responding to the incident.
"When I looked out my window I couldn't make out what was happening but it was good to see the police in charge, I felt safe," he said.