Gardaí have refused to volunteer for overtime at a football match in Croke Park in Dublin this evening.
This is the first major disruption to public policing as part of the garda protest against pay cuts.
The move will have a knock-on effect across Dublin as foot patrols in the city will have to be reduced to allow gardaí to police the stadium.
The Irish Times estimates that around 80 staff will have to be taken off the streets and reassigned to duty at Croke Park.
President of the Garda Representative Association John Parker said the withdrawal of goodwill was not designed to impact on the public.
"Garda management have the ability to redirect normal rostered resources throughout the Dublin metropolitan region," he said, "and to direct non-rostered gardaí to perform duties in the environs of the stadium."