Police are investigating more emails of a "concerning nature" on Sunday morning that have been directed to several organisations.
Police confirmed the threatening emails have been sent to organisations including hospitals and places of worship throughout New Zealand.
Police said its staff are working with those affected and each organisation may respond differently according to their individual circumstances and the information available to them.
Are you impacted? Email firstname.lastname@example.org
Police confirmed the emails are "similar" to those received by a number of organisations on November 23 and 24 and are working to establish the origin of the emails.
"We ask that organisations who receive the emails continue to report them to Police, to assist in our ongoing enquiries to identify the origin of the emails," a police spokesperson said.
"Any threat received will be treated with the appropriate caution however, Police have not established any actual threat at this time."
Police said they acknowledge how unsettling these emails are for all concerned and thank everyone involved for their cooperation.
"Police will not be disclosing the names of individual organisations that received emails."
It comes about two weeks after over 70 schools, hospitals, places of worship and organisations, also received threatening messages across New Zealand. This saw schools evacuated and closed as police investigated.
In an email Newshub has seen, Mairangi Bay School principal Nathan Janes told students at the time to stay home until further notice due to a "bomb threat".
Children at the out-of-school care programme were evacuated to a safe area.