The X Factor judge Louis Walsh welcomed the news that Irish police have dropped an investigation into an allegation of indecent assault.

The music mogul was commenting as it emerged that a 24-year-old man had been arrested on suspicion of knowingly making a false report to gardai.

He was detained in Navan town and was taken to Dublin for questioning in a city centre police station, where he can be held for up to 24 hours.

The penalty for such an offence ranges from a 500 euro fine to five years in jail.

Louis said it had been a ‘hugely distressing time’ and he was now pursuing legal action over publication of the story.

He said: “I have been informed by An Garda Siochana that I am now no longer under investigation.

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

Louis said he was ‘outraged’ that the story was ever published and he had instructed his libel lawyer.

He 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.”