Senator Neale Richmond says the purported event is a "straight up scam"
Leaving Cert students are being warned about a fake Facebook event advertising a music festival in Dublin on results night.
The event claims to detail a results party scheduled for 17th August in Marlay Park.
More than 2,700 people have said they are 'interested' in attending.
Dún Laoghaire-Rathdown County Council has said it has "not given, nor will be giving, any authorisation or licence for such events in any of its parks".
Fine Gael Senator Neale Richmond says students should not buy any tickets or turn up to the park on the night.
Senator Richmond suggests it has the appearance of a legitimate festival, but people shouldn't be fooled into parting with their money.
"Already this event has attracted 2,700 interested attendees and it appears to be a very legitimate and professionally organised event," he said.
"However, Dun Laoghaire Rathdown County Council has neither received any applications to stage such a festival, nor has it granted a license for one.
"I have reported the event to the Gardaí and I am warning any would-be festival goers and parents/guardians that this is a scam," he added.