WorkSafe New Zealand has been notified and will be assisting Police with our inquiries."
The man had a family member with him at the time of the incident, though he was working alone in the tree.
Mr Austin said he was left suspended from his harness, which made it difficult for emergency services to reach him, but every effort was made to help him.
He was removed from the tree about 2pm this afternoon.
Mr Austen said it was an obviously tragic situation for his family to see.
Seddon St was cordoned off this afternoon as police, the fire service and ambulance attended the scene.
The matter has been referred to the coroner.