Mystery continues over millionaire's murder despite daughter's confession

The sister of a murdered Melbourne millionaire is calling for justice almost 14 years after he was found dead in his garage, and a confession and a murder trial were not enough for a conviction.

Police say Michael Griffey, 45, was brutally bashed on the afternoon of December 29, 2005, and his body, covered in a tarp and a bed sheet, lay undiscovered for four days in his garage in Pakenham.

About 14 people celebrated New Year's Eve at the Griffey family home in Pakenham that year.

Mr Griffey’s sister Karina Fitzpatrick told A Current Affair she’s still devastated by her brother’s death.

"I have cried, I've had so many tears about this, just the reaction,” she said.

"I just wish he was here, he shouldn't be dead.”

Cassandra Griffey, the daughter of Michael Griffey, walks outside of court. Source: A Current Affair/ Nine Network

She is urging someone come forward to provide police with information that will lead to a conviction.

“I just wish that they please come forward and just let Michael rest, and let me have peace of mind," Ms Fitzpatrick said on ACA.

Mr Griffey’s estranged wife Diane, son Kenny and daughter Cassandra were all questioned as part of the investigation.

Yahoo News Australia is not suggesting any of them are guilty. No convictions were ever laid following Mr Griffey’s murder. No murder weapon was found either.

Cassandra, then 17, confessed to murdering her father in 2007 but police didn’t believe her version of events added up. Kenny denied he was responsible.

Diane Griffey leaves the Melbourne Supreme Courts in March, 2006. Source: AAP

Diane Griffey was to face trial for the father of three's murder, but the charge was dropped in 2008.

It emerged during Ms Griffey's committal hearing that her estranged husband was a womanising millionaire who had a string of lovers and loved luxury cars.

The court was told Ms Griffey was the sole beneficiary of her husband's two life insurance policies, totalling more than $1.5 million. Michael and Diane had run a successful transport company.

Detective Sergeant Robertson said in 2015 there was not sufficient evidence to charge the person or persons responsible.


Mr Griffey's murder has never been solved. Source: A Current Affair/ Nine Network

With AAP

Do you have a story tip? Email: newsroomau@yahoonews.com.

You can also follow us on Facebook and Twitter, download the Yahoo News app from the App Store or Google Play and stay up to date with the latest news with Yahoo’s daily newsletter. Sign up here.