Martin McGuinness Sinn Féin died aged 66
The former IRA leader turned peacemaker worked at the heart of the power-sharing government following the 1998 Good Friday Agreement
It is understood he had been suffering from a rare heart condition. He became deputy first minister in 2007, standing alongside Democratic Unionist Party leaders Ian Paisley, Peter Robinson and Arlene Foster. Mr McGuinness stood down from his post in January in protest against the DUP's handling of an energy scandal, in a move that triggered a snap election. Sinn Féin President Gerry Adams said: "Throughout his life Martin showed great determination, dignity and humility and it was no different during his short illness.