The head of the Family Court fears there could be bloodshed in courts, because of inadequate security.
A total of 4231 items were seized at court premises in the year from June 2007.
Principal Family Court judge, Peter Boshier, says security at courts is well short of overseas standards and victims of violence are not safe.
He told Nine To Noon that only eleven District Courts have walkthrough scanners.
Judge Boshier gave an example of a colleague who was a judge at Palmerston North for four months, before a woman was killed during a judicial conference.
Knives, scissors and a handgun were seized at the Manukau court building in just one week in March this year. A scanner is installed there.