Four people have been taken to hospital in the North following a row at a conference in Enniskillen, Co Fermanagh.
Police received a report of the disturbance in the Lough Shore Road area shortly after 1pm this afternoon.
Two people were treated at the scene for their injuries.
A conference, which was being held in the area, had been disrupted by protestors when the row broke out.
A 34-year-old man was arrested on suspicion of criminal damage and possession of a weapon in a public place. He remains in PSNI custody at this time.