A minute's silence has been held in the Dáil to remember Detective Garda Colm Horkan who died following a shooting in Castlerea, Co Roscommon, last week.

Minister for Justice Charlie Flanagan led the tributes and told the house there has been a national outpouring of shock and grief since Det Gda Horkan's death.

He expressed his deepest condolences to the Horkan family and to the detective's colleagues, who he said were heartbroken by his loss.

Mr Flanagan said Det Gda Horkan's death is an-all-too painful reminder of the personal risks that gardaí take while working to keep us safe.

He said the statements in the Dáil cannot ease the pain for the family, but he said he hoped they can take some comfort in the respect and admiration for him.

The minister said Det Gda Horkan "lost his life doing a job that he loved, protecting and serving the community he loved. He represented the very best of An Garda Síochána and the best of us."

Fianna Fáil's Jim O'Callaghan said the detective garda gave his life defending our community at a time when most people were sleeping safely in their beds.

He said the job of a garda can be a very dangerous one and we can gain courage and strength from the relationship between gardaí and members of public.

Sinn Féin's Martin Kenny said Det Gda Horkan was a decent man and he was taken all too soon from those who loved him.

He said his murder was a reminder of the stark reality that gardaí go out to work every day knowing they could meet danger and harm.

Green Party TD Roderic O'Gorman said Ireland benefits greatly from a police force that keeps our community safe rather than the "rigid law enforcement approach" in many other countries.

Labour's Ged Nash said when one member falls in the line of duty it is felt across the entire force and Det Gda Horkan embodied everything that is good about An Garda Síochána and everything a member should be.

A minute's silence for the detective garda was held before the start of a Policing Authority meeting this afternoon.

Authority chair Bob Collins said it was "meeting under the shadow of death" in the aftermath of the killing.

He said gardaí "go willingly into the gap of danger so the rest of us can live our lives as they wish to and his death speaks to us of the essential role An Garda Síochána plays within a democratic society."

Mr Collins again commiserated with the Horkan family and his colleagues.

Garda Commissioner Drew Harris said Det Gda Horkan was an example "of all we expect" from An Garda Síochána and the force "will continue to do all it can to support" his family and colleagues.

He said it has been a traumatic incident for the organisation.

The detective garda was buried following a State funeral in his hometown of Charlestown, Co Mayo, on Sunday.

A 43-year-old man has been charged with his murder.

Stephen Silver, with an address at Aughaward, Foxford in Co Mayo, was remanded in custody after he appeared before Castlerea District Court last week.

He is due in court again on Friday.

Additional reporting Paul Reynolds