There was mayhem on Dublin's O'Connell Street on Thursday evening after hundreds of people gathered for a fake Halloween parade

It's understood a rumour circulated online that a parade was due to take place on O'Connell Street.

Hundreds of people gathered along O'Connell Street in Dublin city centre this evening for a hoax Halloween parade

There was chaos in Dublin city centre this evening after a website falsely claimed a Macnas Halloween Parade was set to take place, with hundreds of people turning up

Gardaí intervened to disperse a large crowd that had gathered on Dublin’s O'Connell Street for a non-existent Halloween parade