Two men are still in garda custody this morning in connection with the murder of Dundalk woman Irene White last year.
The pair, aged 43 and 34, were arrested in the Dundalk area yesterday on suspicion of withholding information about the killing.
Ms White, a mother-of-three, was found lying in a pool of blood after being stabbed to death at her home in the Co Louth town in April 2005.