Guardian News and Media/London

The schoolteacher who was murdered in front of her pupils died of multiple stab wounds, a postmortem has confirmed.
Ann Maguire, 61, was killed in her classroom at Corpus Christi Catholic college in the Halton Moor area of the city of Leeds on Monday morning.
Described yesterday as an “amazing, inspirational teacher” who was an “asset to the city”, she had worked at the school for 40 years and was due to retire at the end of the summer term, the chair of governors said.
A 15-year-old boy from the school was arrested after being restrained by teachers and remains in custody.
He was to be questioned by detectives later yesterday, West Yorkshire police said.
The boy was too “traumatised” to be formally interviewed on Monday in the aftermath of the attack, a police source said.
At a special service held in the church next to the school yesterday, priests offered prayers not just for Maguire’s family but also for her attacker.
Police confirmed yesterday that Corpus Christi had a dedicated “safer schools” officer stationed in the school, tasked with keeping pupils and staff safe, but that she was elsewhere when the attack took place.
“She wasn’t in the school at the time of this incident - some of the safer schools officers support a number of schools across the city. This officer partners with another school and unfortunately she was helping that school at the time of this incident,” said chief inspector Nik Adams, head of neighbourhood policing in the area.
At a press conference outside the school yesterday, detective superintendent Simon Beldon, of West Yorkshire police, said the teenage suspect would be questioned by officers but it would not be a quick process.
“Given his young age, this is a process which needs to be handled very sensitively, and may take some time to complete.
“The pupils who witnessed this incident are still being interviewed by specialist officers who are very experienced in dealing with child witnesses and will ensure that their safety is paramount.”
Asked if he was any clearer on what motivated the attack or nearer to understanding what exactly happened, Beldon said: “It’s very early days in what we are trying to achieve, so I really don’t want to speculate on that.”
A crime scene remained in place in the area of the school where the murder took place, said Beldon, but it was “no longer actively under forensic examination”.
Maguire’s death is thought to be the first time a teacher has been stabbed to death in a British classroom, and the first killing of a teacher in a school since the 1996 Dunblane massacre.
Police have confirmed she was stabbed in front of terrified pupils, who raised the alarm.
Educational psychologists were on hand to help those affected, as well as trained counsellors from Catholic Care, said Nigel Richardson, Leeds city council’s director of children’s services.
Martin Dowling, chair of governors at Corpus Christi, said Maguire had recently gone down to a four-day week in preparation for her retirement at the end of the school year. He said: “Ann was a wonderful and dedicated teacher and will be remembered fondly by all of us. She had taught at Corpus Christi for 40 years and touched the lives of many people in the local community. She also taught the parents of some of our pupils.
“I would also like to pay tribute to the staff and students for the way they have coped with these tragic events.”
Paying tribute to Maguire, Richardson told reporters: “Our thoughts and sympathies are with Ann’s family, friends and colleagues at this difficult time.
“Ann was an amazing, inspirational teacher, and a pillar of the local community and a real asset to the city of Leeds.” He said it was the right decision to keep the school open so the community could come together to support one another.