GARDAI warned victim Ciaran Noonan last year that his life was in danger because of the people he owed money to.
Mr Noonan had also committed a string of robberies and thefts over the last two years to pay off debts and save his life.
His body was found in a ditch in Meath on Friday night after he was abducted in Dublin's East Wall on October 20. He had been stabbed to death.
Gardai have arrested a man in connection with the murder of the 29-year-old father of one. He has since been released and a file has been sent to the Director of Public Prosecutions.
Mr Noonan, from Clonsilla, was due before the courts to be sentenced this month for robbery, attempted robbery and theft. Over the course of two days, he committed three desperate robberies and attempted robberies. Two weeks later he stole a truck containing thousands of euro worth of goods.
Gardai agreed he committed the crimes to get money for the drugs debt.
Judge Yvonne Murphy was told Mr Noonan had been introduced to drugs when he was 24 and had lived a "reasonably good life up until that point". He became heavily addicted and mounted up drug debts.
By the time of last year's court date he had managed to get himself drug-free.
Gardai issued him with an official garda document stating "gardai believe there is a serious threat on your life".
Gardai said his statement was "littered with apologies" and he made full admissions.
In his statement, he said that his drug dealers were making him carry out the crimes and if he complied his debt "would all be forgotten".
At a court hearing in March, Judge Murphy indicated she was willing to give Mr Noonan a second chance, provided he stayed drug free.