Easter Rising in putting the rising off for only a day, although it greatly reduced the number of Volunteers who turned out. British Naval Intelligence had been aware of the arms shipment, Casement's return, and the Easter date for the rising through radio messages between Germany and its embassy in the United States that were intercepted by the Royal Navy and deciphered in Room 40 of the Admiralty. The information was passed to the Under-Secretary for Ireland, Sir Matthew Nathan, on 17 April, but without revealing its source, and Nathan was doubtful about its accuracy. When news reached Dublin of the capture
Centenary of the Easter Rising Easter Rising centenary parade occurred in Dublin city on Easter Day, 27 March. It was shown live on RTÉ and attended by such dignitaries as President Michael D. Higgins, First Lady Sabina Coyne, Acting Taoiseach Enda Kenny, his wife, the Garda Commissioner Nóirín O'Sullivan, Ceann Comhairle Seán Ó Fearghaíl, former Presidents Mary Robinson and Mary McAleese, former Taoisigh Bertie Ahern (accompanied by his brother Noel Ahern), Brian Cowen and Liam Cosgrave, Fianna Fáil leader Micheál Martin and Martin McGuinness (representing the Office of the First Minister and deputy First Minister). On Easter Monday (28 March), President Higgins and Acting Taoiseach