Former RTE broadcaster Liam Ó Murchú has died aged 86.
The Cork-born writer studied at UCC and acted as law advisor to Sean MacEntee and then Charles Haughey before he joined RTE in 1964 as Editor of Irish language programmes.
O'Murchu also filled the roles of Assistant Controller of Programmes and Assistant Director General and also presented shows including Trom agus Éadrom and Up for the Final.
Ó Murchú left RTÉ in 1988 to set up his own production company.
He also wrote several books and articles that were published in the United States, Britain, and Ireland. His work includes Black Cat's Tales and Black Cat in the Window.
In 2002 he received an honorary degree from University College Cork.
He is survived by eight children, grandchildren and great grandchildren.
President Higgins said: "I was greatly saddened to hear of the passing of former broadcaster, editor and producer, Liam Ó Murchú.
"Throughout his career Liam worked tirelessly to promote the Irish language both in front of and behind the camera. What set him apart in the promotion of the language was his belief that the language belonged to everyone and he displayed this inclusive approach as presenter of the bilingual programme, Trom agus Éadrom.
"He will be remembered by his former colleagues in the media and broadcast sector as a consummate professional who was full of warmth and vitality.
"Sabina and I express our deepest sympathies to his eight children, his grandchildren, great grandchildren, his extended family and his friends."