Woman admits killing baby found in toilet

A woman has admitted killing her newborn baby when she was a teenager and leaving the boy in a basin at a caravan park toilet block in Western Australia almost 25 years ago.

The woman cannot be named because she was just 14 when she committed the crime in Kambalda, in WA's Goldfields region, in July 1995.

Cold Case Homicide Squad detectives had charged her with wilful murder, but on Friday the offence was discontinued and she instead pleaded guilty to infanticide.

The case will return to Perth Children's Court on July 6 for a status conference.

Detectives last year travelled to regional Victoria to charge the woman, who has other children.

She was extradited to WA but was granted bail and allowed to return to Victoria.

The baby did not have a name, but others have referred to him as Rijul, meaning "innocent" in Hindi.

Judge Gillian Braddock previously described the case as "traumatic and tragic", saying the woman was also a victim of crime, as she was 13 when the baby was conceived.

Judge Braddock said the case was unlike anything she had come across before in this jurisdiction.

A man, who also cannot be named, was last year charged with historical child sex offences in connection to the case.

Perth Magistrates Court has heard he was in a relationship with the teenager's mother and she regarded him as her stepfather.