The accusation was that Louis Walsh, a music industry manager and judge on the show X-factor, groped a man in the restroom at a club during an appearance of a band Walsh manages.
The part that I am happy to see is that Mr. Walsh is planning to pursue a libel action against the accuser. Mr. Walsh's statement says it all:
"...While I obviously welcome today's confirmation from the Garda that the matter has been dropped I remain outraged that this story ran in the first place in the Sun and I have instructed my libel lawyer to vigorously pursue legal action against the paper and they will also be taking action in relation to a number of other equally serious related matters.Link: http://www.irishtimes.com/newspaper/breaking/2011/0628/breaking44.html
"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."