The father of the woman subjected to a sex attack by Anthony Lyons has said that the businessman has not shown any meaningful remorse.
Lyons, a wealthy aviation broker from Griffith Avenue in Dublin, left Arbour Hill Prison this morning.
He had pleaded not guilty to violently sexually assaulting the young woman and claimed he was overcome by an "irresistible urge" due to a combination of alcohol, cholesterol medication and cough syrup when he attacked her.
Lyons had been sentenced to six years in prison with five and a half years suspended initially, but a further 18 months was later added to that sentence.
His victim's father criticised the judicial system and said that Lyons never showed remorse for he did.
"The word 'sorry' was used just once by his legal team in court," he said.
"He never had to take the stand, he never had to speak.
"He tried to stop my daughter from taking the stand, but she was brave enough to take the stand.
"He's never shown any remorse as far as I'm concerned - you can't ask your legal team to say sorry for you and you're standing there pleading 'not guilty'.
"It doesn't make sense."