At the request of Police, the Defense Force has carried out a controlled explosion on part of what is believed to be an historic military artillery shell.
It was found in Otago Harbor a few days ago by a worker connected to the dredging of the shipping channel.
Police sent photographs of the device to the Defense Force to assist in assessing the shell.
On Sunday, 26 June 2016, a controlled explosion of the device was carried out.
The head of the shell is thought to be more than 100 years old, and may have been used in coastal defenses.