Hundreds of local people attended a poignant and emotional outdoor vigil in Castlerea on Thursday evening where prayers were said in memory of Detective Garda Colm Horkan, who was shot dead in the town on Wednesday night.
Parish priest Fr. John McManus asked people to join him in a special prayer. A book of condolence is being opened in garda stations throughout the country.
Locals have been devastated by the brutal murder of a very popular member of An Garda Síochána. The late Detective Garda Colm Horkan, a native of Claremorris, Co. Mayo, served in Co. Roscommon for most of his career.
The man in his 40s who was arrested close to the scene of the killing on Wednesday night remains in Garda custody.