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Police are close to deciding whether broadcaster Tony Veitch will face criminal charges.
Sources told the Herald on Sunday three CIB detectives had almost finished investigating allegations he assaulted former partner Kristin Dunne-Powell in January 2006.
The file is still with police but the Herald on Sunday understands a Crown prosecutor has been assigned to the case and spoke with one of the detectives on Friday.
Police and Crown Solicitor Simon Moore declined to answer questions because the case is ongoing.
Police spokeswoman Noreen Hegarty said she could not give any specifics "about who we have or haven't spoken to. We are making progress".
Dunne-Powell laid a formal complaint with police shortly after Veitch resigned from his dual roles at TVNZ and Radio Sport two weeks ago.
The Herald on Sunday understands police have yet to interview him, but he has hired Stuart Grieve QC to prepare a defence should charges be laid.
Veitch resigned after almost a fortnight of speculation over the incident.
He admitted "lashing out" at Dunne-Powell but questions remain over what happened, who knew what, and why Veitch's employers took no action when he raised the issue with them.
Last December, Veitch met a senior TVNZ lawyer and executives Jeff Latch, Anthony Flannery and Peter Parussini and told them about the 2006 incident.
There are questions about exactly what he said but TVNZ said the matter was not regarded as serious enough to report it to chief executive Rick Ellis.
TVNZ chairman Sir John Anderson has written a report for Broadcasting Minister Trevor Mallard.
Veitch agreed to pay Dunne-Powell $150,000 compensation last December after nearly three months of negotiations.
He also agreed to make a further $5000 contribution to a women's anti-violence group.