The Media Minister says the Broadcasting Act needs updating to ensure a level playing field.

Warner Brothers Discovery has confirmed Newshub will shut July 5.

TVNZ has also confirmed plans to cut its Midday, Tonight, Fair Go and Sunday shows.

Media Minister Melissa Lee says she's written a cabinet paper, but wouldn't give any further details.

"There is a Cabinet process, there is a Cabinet paper- there's a process. I'm not going to comment further on it."

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