Wellington Police is investigating three similar incidents in the last 24 hours in which Government addresses have received suspicious mail.
One suspicious letter was received at the Reserve Bank this morning. It follows similar postal deliveries yesterday to MAF and Parliament Buildings.
Detective Senior Sergeant Paul Borrell, Wellington CIB, said he believes the three deliveries are linked as in each case the sender inferred that the items contained 1080, a poison used in pest eradication.
He said the substance is being sent to the ESR for analysis. The envelopes are also being analysed by fingerprint and document examination staff as part of the forensic focus.
"I'm unable for investigative reasons to disclose any further information about the items except to say that we're determined to identify the sender."
Detective Senior Sergeant Borrell said staff at each of the three agencies had done the right thing, and followed their standard operating procedures to alert police and emergency services.
Released by Kaye Calder
Wellington Police District communications manager
Tel 04 496 3464 or 0274 373 020