The police officer killed in a shooting at a house in County Louth, Ireland, has been named as Anthony Golden.
Mr Golden, 36, was married and a father-of-three, Ireland's National Police Service confirmed.
The Justice Minister for Ireland has said she is "appalled" over the loss of a Garda's life.
Frances Fitzgerald said: "His death will be mourned by the entire nation.
"While no words at this time can be expected to console his wife and children, his family, his colleagues and all who loved him, they know that he gave his life in the best traditions of An Garda Siochana protecting the community he was so proud to serve."
Garda commissioner Noirin O'Sullivan added her "thoughts and prayers" were with the entire Garda service.
"This incident highlights the unique nature of the job carried out by the men and women of An Garda Siochana, and the dangers they face every day."
The President of Ireland has led tributes to the Garda killed in a shooting during a domestic dispute in County Louth.
Michael D Higgins said in a statement: "This most serious and tragic incident has not only led to the death of a member of An Garda Siochana, while on duty, but tragically has also involved the death of one and the serious injury of another person.
"I want to express my deepest sympathy to the family and friends of the Garda who has so tragically lost his life while responding to this incident.
"My thoughts at this time are also with all others who have been affected by these events."
A police officer shot dead in Ireland was a married father-of-three in his 30s.
The Garda, who has yet to be named, was killed after attending a call-out at a house in Omeath, County Louth at around 6pm.
The gunman, believed to be a man in his 20s, opened fire shooting the officer and a woman, who is seriously injured.
He is then believed to have taken his own life by turning the gun on himself.
Police said the gunman was on bail awaiting trial for dissident republican terrorism at the time.
The dead officer is the 88th member of the force to be killed in the line of duty.
The murder occurred in the same region of Co Louth where Detective Garda Adrian Donohoe was fatally shot on January 25, 2013.
Sinn Féin leader Gerry Adams has expressed his shock at news of the shooting incident which killed two men, one a member of the An Garda Síochána, in County Louth.
"My thoughts and sympathies are with the families of those who have died," Adams said in a statement.
Police have confirmed the deaths of two men, one a serving police officer, following a shooting incident in County Louth, Ireland.
A woman was also "seriously injured" in the domestic dispute at a house in the Carlingford area, police said.
A Garda officer has been 'seriously injured' after a gunman opened fire in Carlingford, County Louth.
Police confirmed the officer was shot after attending a domestic dispute with two other officers.
A number of civilians are also believed to have been injured during the shooting.
Rescue workers have been unable to reach some of the bodies trapped after a fire swept through a traveller site in Dublin.
Five children are feared to be among the dead, which includes a mother, father and their five year old baby. All of the victims belonged to two families.
Emergency services have confirmed that ten people died in the incident, which took place in the early hours of Saturday morning.
ITV News' Peter Smith reports:
Ten people including a mother and father and a five-month-old baby have been killed in a fire at a halting site for travellers in Ireland.
The deaths occurred in Carrickmines in south Dublin after a blaze broke out at about 4am.
A Garda spokesman confirmed the death toll had climbed to 10 after the baby girl died in hospital. Five children are also believed to have died.
President Michael D Higgins said he was shocked and saddened at the deaths.
"My thoughts at this time are with the families and friends of those who have lost their lives and those who have been injured," he said.
Forensic examinations are continuing into the evening to try to determine the cause of the fire.
At least nine people are believed to have died in a fire at a traveller's site in the Republic of Ireland.Read the full story ›