The president of Ireland, Michael D Higgins, Taoiseach Micheal Martin and former Labour Party leader Jeremy Corbyn will feature in a programme of events to mark the 50th anniversary of Bloody Sunday.
A series of events will take place over the weekend in Derry to mark the anniversary of the date when 13 civil rights protesters were shot dead by British soldiers on January 30 1972, in the city.
Another man shot by paratroopers on the day died four months later.
