The man, who was protesting against the controversial Shell gas pipeline in Co Mayo, initially refused to leave but was eventually talked down by police.
He had unfurled a banner with the words 'Shell To Sea' written on it.
Up to 10 members of the Rossport Solidarity Camp group handed out leaflets to passers by during the hour-long incident.
The Department of Foreign Affairs said the man was arrested on suspicion of causing criminal damage and is still being questioned.


















