Sinn Fein has accused a Labour minister of misleading the Dáil and has said he is deliberately interfering to stop Sinn Féin running a 1916 event at the GPO.
The party says the Communications Minister Alex White, is the only person who has the power to stop the GPO from being used for certain events.
Sinn Féin was planning a light show at the historic building during Easter Week next year, as part of its own events to mark the centenary of the Rising.
But Aengus Ó Snodaigh says Alex White is misleading the Dáil when he denies any responsibility.
“We have also written to Minister White, having been told by the OPW’s own George Moore, the Director of Heritage, that the permission for the use of the GPO lay with the Minister himself, the Minister for Communication Alex White, so who is making things up?” Mr O Snodaigh asked.