White Island, off the Bay of Plenty coast. Photo / File / John Borren
White Island, off the Bay of Plenty coast. Photo / File / John Borren
A tsunami warning siren system which went off in the Bay of Plenty this morning was a false alarm, the regional council has confirmed.
Residents had earlier been shaken awake by a 4.2 magnitude quake at 3.45am which struck close to White Island.
The tsunami siren was heard before 8amin the Opotiki region.
Bay of Plenty Regional Council has confirmed the warning was a false alarm.
Emergency Management Coordinator, Jim Tetlow, says this morning's false alarm was frustrating, particularly given the timing, and the cause would be investigated.
"There is well-defined system for activating the sirens, which requires more than simply pushing a button, so we're not sure at this stage how it has occurred," he said.
"We have asked Kordia, the contractors responsible for the siren network, to investigate if there was an issue with the pager network, and explain what has happened and how."
This morning's quake was centred 20km from the island at a depth of just 5km.