A 21-year-old man has been found guilty of murdering his father in Co Cavan two years ago.
Seamus Fitzgerald was handed a life sentence for murdering James Fitzgerald in Bailieborough on 8 January 2006.
During the trial the Central Criminal Court was told that Seamus Fitzgerald suffered from an anti-social personality disorder.
But the jury did not accept that his mental disorder was sufficient to diminish his responsibility for the murder.
Seamus Fitzgerald's mother told the trial her son was a loving child until around the time of his Junior Certificate when his behaviour changed. He started to damage cars, insult people, it was not ordinary teenage behaviour, she said.
Two years before the killing she wrote to Minister for Health Mary Harney asking for help. She got a letter back telling her to go back to the health board.
Seamus Fitzgerald, who had a history of drug abuse, told his doctor in 2003 that he was having weird thoughts and was afraid he would kill himself or someone else.
In January 2006, as his father slept in a chair, he strangled him with a telephone flex and stabbed him. The court heard he did it to get money to buy a car.
Fitzgerald's disorder meant he had a callous unconcern for the feelings of others, a lack of guilt and a disregard for social rules and norms. However he still understood the difference between right and wrong, the court was told.
The Fitzgerald family did not want to make a victim impact statement but asked that Seamus Fitzgerald receive treatment while in prison.
