A 43-year-old man has been charged with murder over the shooting of Detective Garda Colm Horkan in County Roscommon.
Stephen Silver from Aughaward, Foxford in County Mayo appeared before a special sitting of Castlerea District Court on Friday night.
Det Garda Horkan was shot several times on Wednesday night in Castlerea, County Roscommon, and died at the scene.
In court, Mr Silver told the judge the murder charge was "absolutely unreal" and added: "I had no firearm on me."
Mr Silver was remanded in custody for a week. He is due to appear in court again via videolink on Friday.
Detective Horkan's funeral is due to take place in his home town of Charlestown, County Mayo, on Sunday.
Hundreds of people turned out in Castlerea for a vigil in his memory on Thursday evening.