Two men remain in Garda custody in Co Offaly this evening in connection with the death of Christy Daly in Clara last year.
The 47-year-old father of six from Bog Lane was found shot dead on December 29.
Three people have been charged in connection with his murder. The latest, a 23-year-old man, appeared in before Tullamore District court earlier today.
Two men, aged 24 and 25, were arrested in Dublin this morning. They are being questioned at Tullamore Garda Station.