Wellington Police are advising the public to stay calm despite threats of a possible demonstration of explosive, chemical or gas capability in Wellington on 28 March.
"People should remain vigilant, continue to report any suspicious activity, and more importantly continue their day to day work and leisure activities," Superintendent John Kelly, Wellington District Commander said today.
He said today’s public release of the threatening letter was unrelated to the visit of Australian Prime Minister John Howard.
Mr Kelly said police are investigating the source of the letter to try and find the perpetrator/s.
"News of this latest threatening letter, although being treated as serious by police, is a reflection of the changing international environment. The overall security risk in New Zealand remains low and we certainly don’t want to create unnecessary fear and alarm amongst the general public and business community.
"The safety of Wellingtonians remains our first priority. We’ve been in touch with council leaders in our district and advised them of the threat and will be working closely with them and other emergency services on any security measures that may or may not be required.
"It’s a good idea however for people to take some simple, prudent security steps. These include checking the identity of visitors to commercial premises, buildings or utility suppliers and reporting suspicious behaviour to police.
"These sorts of security measures are commonplace overseas but not so prevalent here.
"All we ask is that people stay calm, look around them, and report anything that looks untoward."