Ronan Keating has branded the justice system a "joke" after a man escaped a prison sentence for causing the death of his older brother

The 47-year-old singer posted on Instagram :"Today's sentencing was a devastating example of just how broken our justice system is.

"You can kill a man... and you can walk free. Not even a single night in prison. Just a slap on the wrist and a ticket to carry on with your life, like nothing ever happened.

"And then we wonder why we keep seeing this kind of behaviour on our roads, why people keep dying in road accidents across Ireland every week?

"It's a joke and it's morally corrupt that rather than trying to fix our broken system, they all turn a blind eye.

"Shame on Dean Harte but more-so shame on everyone involved in this process that contributed to the heartbreaking outcome for my family today."

The 'Life is a Rollercoaster' singer vowed to "continue to fight" for justice.

He added: "The Lord himself knows the injustice that was served and the Keating family will never find peace.

"We will continue to fight for Ciaran's justice. At this time we think of all the other families who have found themselves in our position, and we pray that other families never do."

Ronan - who has Jack, 25, Missy ,23, and Ali, 17, with ex-wife Yvonne, and Cooper, seven, and Coco, five, with spouse Storm - previously admitted his brother's death made hi reevaluate his priorities and take a step back from working so much.

He told OK! magazine: "That was the turning point in all of our lives.

"[My wife] Storm and I probably pushed ourselves and worked a little too hard this year, so now we can back off from work.

"We're assessing life. It has been a very tough 12 months."