This week, suspicion swirls around the leak of Simon Bridges' travel expenses, as an inquiry is launched to look into the document release.
1 NEWS' political editor Jessica Mutch and politics reporter Maiki Sherman discuss the leak on Inside Parliament, our weekly look at politics.
Ms Sherman described the search for how the document as, like "a game of Cluedo".
Mr Bridges' MP expenses were released earlier than scheduled this week, with $113,973 spent on travel and accommodation between April and June.
"If there is a gap in the Parliamentary Service, I want it to be fixed, and if there is not, I think it is appropriate for the person who leaked the document to be identified," Speaker Trevor Mallard said.
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