A Taranaki farmer has been charged with making criminal threats in relation to the white powder scare at the Beehive.
Three Parliamentary staff members and a security guard had to be decontaminated after the unknown white powder was sent in an envelope to the eighth floor of the Beehive in August.
Police later said the substance was harmless and neither biological nor chemical.
Doug Hancock, 61, was arrested on Tuesday at his home at Matau, about 40km east of Stratford. He appeared in Hawera District Court and was remanded on bail to reappear in two weeks.
His arrest followed forensic examination of documents that accompanied the white powder, according to police.