The country woke to the horrific news that yet another member of An Garda Síochána had lost their life in the line of duty.
In the early hours, Garda Colm Horkan, a highly respected and popular detective, based in Castlerea, Co Roscommon, was shot and killed while responding to a call-out.
Horrendous tragedies like this are thankfully rare in Ireland -but they cast a long and painful shadow in the communities where they happen.
The murder 40 years ago of Garda Henry Byrne and Tony Morley by the IRA is still acutely painful to the people of their hometown in Knock, Co Mayo. The two distinguished officers were also based in Castlerea station.
To this day, their deaths at the hands of brutal IRA criminals who were attempting to flee a bank robbery is remembered with sorrow.
Yesterday's tragedy brings to 89 the number of gardaí who have died while on active duty.
At least 30 members of the force were either shot or met their end violently including:
Tony Golden Omeath, Co Louth, 2015
Garda Tony Golden (36) was shot by dissident republican Adrian Crevan Mackin at a house on the Mullach Álainn estate just outside the village of Omeath, Co Louth, on October 11, 2015. He had also been responding to a domestic incident when he was brutally murdered.
Garda Golden was trying to bring his killer's partner to a place of safety after she was very badly beaten the previous day. He was posthumously awarded the Scott Medal, the highest award for Garda bravery.
Adrian Donohoe Dundalk, Co Louth, 2013
Detective Garda Adrian Donohoe was shot dead in Bellurgan on January 25, 2013.
The father of three was shot by a member of an armed gang at Lordship Credit Union.
Tallaght, Dublin, 1999
The father of three died after he was doused in petrol and set alight. Daniel O'Toole entered the Tallaght garda station and poured petrol over himself, and set it alight as Sergeant Andrew Callanan attempted to assist and disarm.
Adare, Co Limerick, 1996
Det Sgt Garda Jerry McCabe and Det Garda Ben O'Sullivan were escorting a post office truck during a cash delivery in Adare, Co Limerick.
Their patrol was crashed into by a car driven by members of the IRA.
Within seconds, other gang members opened fire, killing Det Garda McCabe instantly and seriously wounding his colleague.
Ardee, Co Louth, 1985
Sgt Paddy Morrissey (27) was shot dead on June 27, 1985, when he went after two men who had robbed Ardee Labour Exchange in Co Louth.
Ballinamore, Co Leitrim, 1983
Garda recruit Gary Sheehan (23) was shot dead during the search for kidnapped supermarket executive Don Tidey.
Dunboyne, Co Meath, 1983
Sgt Patrick McLoughlin was asleep in the early hours of April 11, 1983, when he heard a knock on the door of Dunboyne garda station. He opened the upstairs window to see who was there. He was shot and later died.
Tallaght, Dublin, 1982
Garda Patrick Reynolds, a motorcycle garda, went to investigate stolen property in a house in Tallaght and was shot in the head and back in a scuffle when he and colleagues tried to arrest three people.