A tsunami warning has been issued for New Zealand following a powerful earthquake, with initial reports putting the magnitude at 6.3. Authorities are urging caution along coastal areas as the situation develops, though full details of the quake's location, depth and potential impact have yet to be confirmed.

The Daily Mail reports this as a breaking, developing story, with limited details available at the time of publication. No information on casualties, damage or the precise epicentre has yet been released, and further updates are expected as the picture becomes clearer.