Sinn Féin's finance spokesman Arthur Morgan tonight confirmed he would not stand in the next general election.
In a statement the Louth TD said he would not be running for a third term in office as he wished to return to his role in the family fish processing business, of which he is currently a director.
"It has been a great honour to represent the people of this county and it has been a similarly great honour to represent the Sinn Féin party in Louth and Leinster House," Deputy Morgan said, adding that his decision "would not have been a great secret" in the party.
Thanking both the party organisation in Co Louth and the electorate, Deputy Morgan said he intended to remain active within the party.
A native of Omeath in Co Louth, Deputy Morgan is married to Marian. First elected to the Dáíl in 2002, he retained his seat in the 2007 general election.
The TD is also a former provisional IRA prisoner having been sentenced to 14 years in jail after being arrested on a boat on Carlingford Lough during an operation in 1977. He served seven and a half years in the Maze prison.