Police now believe a pregnant woman who was murdered as she walked to work south of Brisbane was attacked where her body was found.

"At this time our investigation suggests the initial assault occurred in Leichhardt Street," Regional Crime Co-ordinator Detective Superintendent David Hutchinson told AAP.

Joan Ryther, 27, was attacked on her way to work in Logan about 8.30pm (AEST) at a McDonald's restaurant on Tuesday night.

Her partially clothed body was found on Wednesday on the front lawn of a house in Leichhardt Street only metres from her workplace.

She had been raped and had received head injuries.

Supt Hutchinson said he could not reveal exactly what led police to believe the attack happened where her body was found.

"I don't want to go into detail, but a combination of things and an examination of the scene means we're of the view at this stage that the initial assault happened in Leichhardt Street."

Detectives would like to eliminate a man from their inquiries who was wearing a yellow top in the area.

"I've been quite critical of the media about this, they've been painting him as the villain.

"Of course as soon as he sees that he's going to think `well, I'm not going to go see the coppers if they think I'm the villain, but we just want to eliminate him from our inquiries."

Detectives have confirmed Cory Ryther was at work when his wife, who was three months pregnant, was attacked and is not a suspect.

Mr Ryther returned to his home on Thursday night and was interviewed by detectives on Friday.

"He's not doing too well. He's quite emotional about it all as you can imagine and having all the media parked outside his house is not helping," Supt Hutchinson said.

Mr Ryther may make a public appeal on Monday for information on his wife's murder.

 

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