"Mr Katter's threats of violence towards journalist Josh Bavas are completely unacceptable. Threats of violence have no place in Australian political discourse, especially coming from a member of parliament.
"The threat on Friday was bad enough but to have now doubled-down on it and said he should have been 'more aggressive' is unthinkable for someone in public life.
"Mr Katter has doubled down because he hasn't received any sanction. He seems to think that the normal rules of respectful engagement don't apply to him. This is not ok.
"Mr Katter should unreservedly apologise to Josh Bavas or resign from parliament.
"The standard you walk past is the standard you accept. The parliament has an important role to play in setting the standards of behaviour and this is clearly unacceptable conduct.
"Across the world we are seeing journalists targeted by violence and threats in order to suppress freedom of speech and freedom of information. Freedom of the press is a cornerstone of any democracy, without it we cannot have an informed public and open debate.
"Members of parliament from all sides of the political spectrum must stand together in holding Mr Katter to account. I have written to the Independent Parliamentary Standards Commission to ask them to investigate this matter.