The 21-year-old, who cannot be named for legal reasons, was arrested, interviewed and charged with six offences on Monday.

Those offences include single counts of perjury, intentionally causing injury and recklessly causing serious injury and three counts of intentional sexual penetration. 

She appeared in the Warrnambool Magistrates Court late on Monday and did not apply for bail. 

Magistrate Cynthia Toose ordered a hand-up brief be prepared by February 23 and set a committal mention date of April 6.

The court heard the woman was pregnant and it was her first time in police custody.

It is expected that the woman will apply for bail on December 15.

A 30-year-old man has been charged with attempting to pervert the course of justice.

EARLIER: A man and woman have been arrested as police continue their investigations into an incident which left a young Warrnambool girl with serious injuries.

Detectives from the Warrnambool Sexual Offences and Child Abuse Investigation Team (SOCIT) arrested a man, 30, and a woman, 21, in Warrnambool this morning following an incident on October 18.

Police said a five-year-old Warrnambool girl was taken to Warrnambool Base Hospital with serious injuries before being transported to Melbourne’s Royal Melbourne Hospital where she spent weeks recovering.

She has since been released from hospital and is recovering well.

Police said the Warrnambool man and woman were in custody assisting police with their inquiries.

Police are urging anyone with information to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au