Sports presenter Tony Veitch's former partner lay on the ground of his apartment for several hours before he picked her up and took her to hospital, The New Zealand Herald reported.
The Herald said it had been told by a source who did not want to be named that after an altercation during which, it is alleged, Veitch threw Kristin Dunne-Powell down a flight of stairs, then kicked her as she lay on the ground, she passed out.
Veitch has not given details of the incident - for which he has apologised to her and paid her up to $170,000 - saying only he "lashed out in anger".
Broadcasting Minister Trevor Mallard is pressuring TVNZ to disclose what senior managers knew about the assault and when they learned it.
He rejected a report from TVNZ chairman Sir John Anderson, saying it was too light on details.
He wants to know why the matter was not reported to TVNZ chief executive Rick Ellis, and whether staff knew it was a physical assault, rather than "some kind of altercation".
Veitch has stepped aside from presenting One News sport, the TV quiz show A Game of Two Halves and Radio Sport breakfast while his employers investigate claims he assaulted Ms Dunne-Powell in 2006, breaking bones in her back and leaving her temporarily unable to walk.
TVNZ said last night veteran broadcaster Peter Williams would replace him as its front-man for the Beijing Olympics.
Williams will present the evening coverage, and the sports news within the 6pm bulletin.
Veitch did not return calls yesterday.
Sir John said on One News last night an agitated and stressed Veitch told managers he wanted to talk about a domestic matter just before he was due to marry Zoe Halford.
At the meeting, Veitch said he was under severe pressure from a former partner, which culminated in a request from a lawyer for money.
Some time after the meeting, Veitch told TVNZ he had settled the matter with a payment.
Prime Minister Helen Clark said yesterday if senior managers knew of the assault and "failed to join up the dots", it indicated a moral crisis at the state broadcaster.
Mr Mallard said it was clear TVNZ managers had been left with the impression of something quite different from the assault that appeared to have occurred.
He said he would be concerned if the affair ended in a payout from TVNZ to Veitch.
