David Mahon received seven years for stabbing the victim outside his apartment in north Dublin in 2013
Dean Fitzpatrick’s father feels his son’s killer should have been given a longer sentence and says he’ll never accept his apology.
David Mahon, who is married to Dean’s mother Audrey, was jailed today for seven years.
Dean Fitzpatrick was stabbed during an argument over a stolen water bottle outside his apartment at Northern Cross in Malahide in 2013.
The 45-year-old’s remorse was one of the mitigating factors taken into account by Ms. Justice Margaret Heneghan.
Dean’s father Christopher said he’ll never be able to forgive Mr. Mahon: "I wouldn't accept his apology under any circumstances."
"He wasn't his step father, he wasn't even married at the time. It's just what he called himself."
A jury cleared him of murder last month but convicted him of the lesser charge of manslaughter.
Speaking outside court afterwards, Dean’s aunt Christine Kenny said the family is devastated by what happened.
"There's no words can explain what this killing has done to our family," she said.
"Our lives are turned upside down.
"It's absolutely devastating looking at my brother and Dean's child and his girlfriend Sarah and seeing how it's affecting them so badly.
She added: "Justice has been served but not how we would have liked."
David Mahon received seven years for the murder but, Crime Correspondent with The Star newspaper Michael O'Toole says it's unlikely he will serve the full sentence:
"Mr. Mahon, like every other prisoner, is entitled to 25% remission," explained O'Toole.
"His sentence has been back-dated to when he went into custody just over a month ago, so effectively he will serve just five years."
"There's also another form of remission called enhanced remission which is 'good prisoners', so if behaves himself he may serve two thirds of his sentence which would be four and a quarter years."