The latest murder victim in the capital's savage gangland feud was heavily involved in the activities of the so-called 'New INLA' and is suspected of "peripheral" involvement in last year's murder of Gareth Hutch.
However, Michael Keogh (36) had this week posted on his social media account about starting a new job and making efforts to turn his life around.
Gardai believe he was seen as a soft target by the Hutch gang.
The father-of-two was only on his way to the second day of his new job when he was gunned down.
It is believed his killers monitored his social media page and were aware of his routine and movements.
Small-time criminal Michael Keogh is understood to have got involved in the activities of the 'New INLA' because of his close relationship with his on-the-run younger brother Jonathan Keogh (32) who is a key member of that organisation.
Jonathan was given an eight-year jail sentence by the Special Criminal Court in July 2009 after he was caught by gardai making pipe bombs the previous September.
After his release from jail, he continued to be involved in major criminal activity and took part in this dangerous criminal gang who then forged links with the Kinahan cartel as part of the feud which has now claimed 12 lives.
Up to 20 criminals are now key members of this mob - nicknamed the "New INLA" - which set up base in Ballymun on the capital's northside last year.
Investigations into the mob were stepped up after a viable bomb and a glock pistol were seized near Mountrath, Co Laois on February 25 last year.