A candlelit vigil has been held at the Brunswick Baptist Church in Australia to remember Irish woman Jill Meagher, who was murdered after a night out at a bar in the town one week ago.

More than 100 people visited the church, which is not far from where Mrs Meagher lived and was last seen while walking home from a nearby bar.

The 29-year-old's body was discovered yesterday in a shallow grave at the side of a dirt road about 50km northwest of Melbourne.

Earlier, a 41-year-old man appeared before Melbourne Magistrates' Court charged with the rape and murder of Mrs Meagher.

Adrian Bayley, from the suburb of Coburg in Melbourne, will now face a committal hearing on 18 January.

Mrs Meagher's husband, Tom, and her brother Michael McKeon were in court for the hearing.

Mr Meagher spoke briefly to the media afterwards.

He said: "Despite the fact that this is the worst thing that we will ever go through in our lives, I've been really humbled by the support of the Australian public, the tireless efforts of the police and all the friends and families who've put their lives on hold to help us out."

Police said that CCTV footage released earlier this week played a major role in the arrest, while a social media campaign greatly contributed to the investigation.

However, Australian police and Tom Meagher have now urged people to be cautious with online comments.

"While I really appreciate all the support, I would just like to mention that negative comments on social media may hurt legal proceedings, so please be mindful of that," Mr Meagher said outside court.

He also asked for the media to respect the privacy of the Meagher and McKeon families at this time.

Yesterday, the McKeon family issued a statement.

Mrs Meagher's uncle, Michael McKeon, said: "We are devastated. We are heartbroken."

He said that there are "no words to describe how we feel at what has happened".

Mr McKeon also acknowledged the role that social media played in the search.

"We believe that it has helped us to reach a conclusion although it is not the one we had hoped and prayed for."