Louis Walsh is no longer being investigated for sexual assault.

The 'X Factor' judge - who was accused of indecently assaulting a 24-year-old father in the toilets of a Dublin nightclub in April - has been told by the Irish police force, An Garda Siochana, that all charges regarding the incident have been dropped.

In a statement, he said: "I have been informed by An Garda Síochána that I am now no longer under investigation.

"I have robustly maintained from the outset that this alleged incident did not occur."

The 57-year-old star explained he had found the allegations "hugely distressing", but vowed to receive "total and absolute vindication" for the hurt caused by the claims.

Louis added: "I have no intention of letting this matter rest until I have received total and absolute vindication.

"This has been a hugely distressing time for me but I would like to thank all my friends and colleagues for their support and I am now just looking forward to getting back to work."

Louis is expected to return to 'The X Factor' auditions in Cardiff tomorrow (29.06.11).