Boy, 16, murdered teacher Ann Maguire after telling Facebook friend of plans to 'brutally kill' her Paul Greaney QC, prosecuting, told the court that the boy's parents were "decent people and responsible parents" and were "at a loss" to understand their son's "inexplicable" actions. There had been nothing to suggest to the boy's parents or teachers a risk of "homicidal violence" but the boy's friends had noticed disturbing aspects to his personality. Mr Greaney said: "Late on the night of Christmas Eve 2013 and into the early hours of Christmas Day, the defendant exchanged messages with a friend on Facebook. In those messages he spoke of 'brutally killing' Mrs Maguire and spending the rest of his life in jail so as not to have to worry about life or money. Weeks later he sent a message on Facebook which said of Mrs Maguire: "The one absolute f****** bitch that deserves more than death, more than pain and more than anything that we can understand." He later told a psychiatrist how he planned the murder, saying: "I decided on Sunday it was going to be a knife. Mr Greaney said the boy told other pupils he was going to attack Mrs Maguire on the morning of the murder. The boy showed them some of them the knives he had with him. Mr Greaney said the boy left a room next to where Mrs Maguire was teaching and winked at a fellow student before going to attack her. There was no expression on the boy's face as he stabbed her, one pupil said, according to the prosecutor. The prosecutor said: "It is important that we should record that it is clear from the evidence that the parents of (the boy) are decent people and responsible parents. They are at a loss to understand how and why their son has turned out as he has and they have co-operated fully with the police and with the prosecution. It follows that this is not one of those cases in which a defendant's actions may find a degree of explanation in his family circumstances. On the contrary, (the boy's) family life was marked by love and support. Mr Greaney said that made the defendant's actions "all the more inexplicable." He said the boy was in Mrs Maguire's Spanish class and his academic reports "had generally been positive." The defendant, wearing a grey suit and tie, stood flanked by two prison officers in the dock as the court clerk read out the charge. He looked straight ahead and showed no emotion as he admitted murdering Mrs Maguire. The teenager's parents sat at the back of the dock and listened intently to the details of their son's crime. Mrs Maguire's family sat in an area of the courtroom normally reserved for court officials, while the large public gallery was packed with members of the press. Due to the young age of the defendant, the judge and barristers did not wear their wigs and gowns during the hearing.