Lachlan Young, a 21-year-old man, has opted to fast-track his murder case to trial, pleading not guilty to the murder of his ex-girlfriend, 23-year-old Hannah McGuire.

Police allege that Young murdered McGuire on April 5 inside her home in Sebastopol, where they had celebrated purchasing a house together the previous year.

Her body was discovered in a burnt-out car in Scarsdale, approximately 25 kilometers south of Ballarat, shortly after her family reported her missing.

The tragic death of McGuire has sparked protests in Ballarat, highlighting the issue of violence against women, particularly following two other alleged murders in the region within three months.

During the court appearance, the courtroom was filled with over 50 supporters of McGuire, many wearing black jumpers with her image and the message 'She matters – remembering Hannah McGuire,' while Young's family was notably absent.

Magistrate Michelle Mykytowycz acknowledged the high public interest in the case and scheduled Young's next appearance for a directions hearing on October 3.

Young's lawyer confirmed that he understood the implications of standing trial, as he appeared remotely in the Ballarat Magistrates’ Court.

Young's decision to fast-track the case to the Supreme Court means he will avoid a public committal hearing.

Young pleaded not guilty to the murder charge during his court appearance, with his next court date set for October.

Research group Counting Dead Women Australia reported that McGuire was the 18th woman allegedly killed in violent incidents in Australia this year.

McGuire's death followed the high-profile disappearance of another local woman, raising further concerns about violence against women in the community.

Young is scheduled to appear in Victoria's Supreme Court in Melbourne for a directions hearing next month.