A witness whose identity has been suppressed has lashed out at an inquest into the murder of a Queensland teenager, claiming he was being "railroaded".
The man was called to give evidence at the inquest into the death of Annette Mason more than 30 years ago.
Annette was 15 when she was bludgeoned to death in a house she shared with friends in Toowoomba in November 1989.
She died of blunt force trauma to the head inflicted with a piece of timber found in the laundry.
No one has been charged with her murder.
A witness, whose identity is protected by a non-publication order, was called to give evidence before coroner Terry Ryan on Wednesday.
He admitted to being an associate of Allan McQueen - a named 'person of interest' in the murder investigation.
He confirmed being with McQueen on the night of the murder when both men saw Annette at the Norville Hotel in Toowoomba.
When pressed to confirm seeing McQueen and Annette arm-in-arm later during the night, the witness said he could not recall.
"I don't even know her," he said.
"I seen her at the pub that night at the Norville Hotel and that was the last time I ever seen her.
"It's that long ago ... I know I have done nothing wrong, mate. I have done nothing wrong to anyone."
While a group of people later left the pub to go on to a Toowoomba nightclub, Annette was refused entry.
He said he had "no idea" what happened after she was turned away at the door, and could not recall seeing McQueen at the club later that night.
The witness became combative when asked about a statement mentioning McQueen urging a third person to "knock them sluts" and accused authorities of fabricating evidence.
"It must be my turn to be thrown under the bus, is it?" the witness told counsel assisting the coroner Adrian Braithwaite.
"Am I getting railroaded here or what?
"It sounds like you're out to get me. You're trying to confuse me ... I have never heard or said anything like that in my life."
When told audio of his previous interviews could be played to the court, he refused to accept the veracity of the recordings.
"In this day and age, you can do whatever you want .. all I know is that I have had nothing to do with this."
The witness was grilled for over an hour and continued to deny his previous statements.
A frustrated coroner reminded the witness he was compelled to tell the truth or risk perjury charges.
"I have told the truth," the witness said.
"The truth is I don't know anything."
When finally dismissed, the witness directly addressed the public gallery where Annette's family, dressed in her favourite shade of yellow, were seated.
"I'm sorry for what happened, but I don't know anything about it," he said.
He maintained his innocence outside the court, telling AAP he had turned his life around.
"They keep dragging me back here, but I have nothing to say. I'm sorry for the family, but I can't help them."
The inquest resumed in the Coroners Court in Brisbane this week to examine when, where and how she died.
Mr Ryan will also try to determine if anyone should be charged with Annette's murder or manslaughter.
The inquest will continue on Friday when jailhouse killer and armed robber Allan McQueen is expected to take the stand.
