A man who says he bought drugs from Rae Portman says he was told who killed the Hamilton woman.
The 33-year-old went missing in June 2012. Her body was found on a South Auckland farm in September of that year.
Paraire Te Awa is on trial in the High Court in Auckland and denies charges of kidnapping and murdering Ms Portman before dumping her body in a pit.
Dean Addison has denied kidnapping and drugs charges.
On Tuesday, Brendon Wilson told the jury he was friends with Dean Addison and was told by Mr Addison and his wife that Mr Te Awa had killed Rae Portman.
He said they were stunned and he couldn't recall too much because it was an emotional time.
Mr Wilson also confirmed that he knew Ms Portman and had been buying drugs from her.
Earlier, a witness connected to Mr Te Awa told the court he was too wasted on medication to remember what he has told police.
The Crown says the witness, who has name suppression, saw Mr Te Awa with a bound woman in the back of a car.
On Tuesday, the witness initially refused to take the oath and later told the court that he was too wasted on anti-depressant medication to recall what he had told police.
Giving evidence from an audio-visual link with prison, the man has also refused to answer questions.