The Justice Minister says the high number of violent deaths so far this year is "very disturbing".
Eight people have been killed in violent circumstances since the New Year and Alan Shatter says he has full confidence in the ability of gardaí to investigate them.
The latest victim was Michael Devoy (42) of Balbutcher Drive in Ballymun. He was shot in the head in Tallaght on Saturday night.
Alan Shatter says he hopes the trend does not continue throughout 2014.
Meanwhile gardaí in Tallaght will receive the results of a post mortem examination carried out on the body of Michael Devoy later this morning.
Irish Independent special correspondent Paul Williams spoke to The Pat Kenny Show here on Newstalk earlier about Mr. Devoy's background.
Paul Williams says there has been an unusually high number of murders so far this year.
Crime Correspondent with the Irish Daily Mirror, Cathal McMahon, told Newstalk's Breakfast Mr. Devoy was wearing a bulletproof vest at the time of his death - and knew his life was in danger.
