Police are investigating the fourth suspicious package, believed to contain 1080 poison, sent to state agencies in Wellington in the past three days.
Police and fire were today examining a package delivered to the Ministry of Health's head office in Molesworth Street.
Pastoral House, home to the Ministryof Agriculture and Forestry, was evacuated on Tuesday morning after a package was discovered in its mailroom, while yesterday morning another package was found at the Reserve Bank's headquarters, also on The Terrace. Three people had to be decontaminated.
