Hundreds of people gathered in Ballaghaderreen, Co Roscommon, this evening to pay their respects to Detective Garda Colm Horkan.
A guard of honour took place as his remains were brought to his family home in Charlestown, Co Mayo.
The 49-year-old worked in Ballaghaderreen for more than 20 years.
He was shot dead in nearby Castlerea on Wednesday night and a man remains in custody in connection with the murder.