Security at Matthew Guy's electorate office has been beefed up after a man with possible links to a far-right organisation trashed the room.

The incident, which happened in May, was one of several serious threats believed to have been directed at the Opposition Leader.

Matthew Guy: predictably wants to get tough on crime. Credit:Ken Irwin

It is understood the man demanded a meeting with Mr Guy. After being told by shaken staff that he was not there, the furious man smashed up the entrance to the office and put his fist through a glass door.

He then ripped the door off its hinges, before threatening to go on a shooting spree.