Woman to be extradited over WA baby murder

A woman has been charged with wilfully murdering a newborn baby, whose body was found at a caravan park more than 20 years ago.

Cold Case Homicide Squad detectives allege the boy was killed in Kambalda, in WA's Goldfields region, in July 1995.

Detectives travelled to Victoria to charge the 38-year-old woman, who was 14 at the time of the alleged offence, and will face court on Thursday.

Police also allege she was the mother of the infant.

"Given the age of the woman at the time of the child's birth, an investigation into the circumstances surrounding the conception of the child has been commenced, and is ongoing," police said in a statement.