The judge tells Khan: "At 12:10, the lunch break began, you made your way to the dining area.

"In the dining area, you spoke to another boy who later described the conversation he had had with you at that time.

"He said you had been mad at [Harvey] and you suddenly talked about a knife. His evidence is that he told you to give him the knife 'before you did something stupid'.

"I cannot be sure that you had seen and made a beeline for Harvey," Mrs Justice Ellenbogen tells Khan.

There was some interaction between the boys that morning at school, which the judge says she is "satisfied was good natured".

The pair had been shadow-boxing and lightly pushed each other around, she explains.

Later, in a busy corridor, they had a similar interaction.

But a short while later, in a science lesson, the boys had squared up genuinely, the judge says.

"It seems words were exchanged between you and a teacher physically intervened," Mrs Justice Ellenbogen adds.

On Harvey's way to see a teacher, Claire Staniforth, another teacher, overheard him saying "something was going to happen".

The judge is detailing the facts of the case.

She tells Khan how he and Harvey Willgoose had become involved in an argument the weekend before the Monday of the fatal stabbing.

Each of the boys had been standing up for their own friends.

Harvey and Khan had initially been friends, the judge says.

On the morning of Harvey's death, the pair had spoken over messages about whether there was "beef" between them.

Mrs Justice Ellenbogen says Khan has caused "unbearable pain and grief" through his "senseless" killing of Harvey Willgoose.

"Harvey's family is haunted by the CCTV footage of the events of that day and is exhausted by the trauma," she tells him.

"It is clear Harvey was a popular pupil who students and teachers held in affection. Their lives, too, have been blighted by your actions."

Khan looks at the judge with a neutral expression, and occasionally glances around the room.

The judge, Mrs Justice Ellenbogen has returned and addresses Mohammed Umar Khan.

Image source, Avalon

"On 3 February 2025, in the courtyard at the school where you were both pupils, you fatally stabbed Harvey Willgoose in his heart," she tells him.

She will sentence Khan for the offences of murder and possessing a blade on school premises.

Mrs Justice Ellenbogen has risen to consider what sentence Khan will receive.

It is unclear how long she will take to make this decision.

Mr Hussain, defending Mohammed Umar Khan says: "Whatever small comfort, if any, it gives, Umar will have a significant period of time to reflect on his actions, the harm, the long-standing harm, he has caused."

Khan glances up at the public gallery as he hears this, although it is unclear who he is looking at.

Mr Hussain adds: "While he has suffered pain, ostracisation, humiliation in the past, it is nothing compared to what Harvey's family will be experiencing."

"Unlike Harvey, he will have the opportunity to live a life and that blessing is not lost on him."

Mr Hussain says the court "cannot be sure" Khan's attack on Harvey was planned or premeditated, beyond the moments before the attack.

"He clearly formed that intent immediately before delivering the fatal blow," he says.

"But prior to that, there were a number of opportunities for him to enact that intent in far more effective ways," Mr Hussain says.

Khan had a genuine fear of violence and had sought to defend himself, he adds.

Mr Hussain, for the defence, tells the court that Khan "did arm himself, but that wasn't with the intention of inflicting harm that day".

He says the friendship between Harvey and one of those who the trial heard was accused of bullying or threatening Khan "cannot be ignored".

But, he adds: "We do not seek to tar Harvey with the same brush."

"We make it clear, [the alleged bullying faced by Khan] was not at the hands of Harvey."

Mr Hussain adds that one witness during the trial gave evidence that Harvey had told Khan he would be "smashed all over".

He says that did not "in any way shape or form justify what came".

Gul Nawaz Hussain KC is making submissions on behalf of Mohammed Umar Khan, the killer of Harvey Willgoose.

"The fact that can never be forgotten, should never be forgotten, is the tragic, heartless, senseless loss of a young innocent life," he tells the court.

"The family of Harvey will live with his loss forever more," he says.

"That is not lost on Umar, on his family, on anyone who's had any dealings in this case."

Prosecutor Richard Thyne tells the court there is "no evidence" that Khan genuinely feared an attack from Harvey Willgoose.

He says Khan's actions were "ultimately in anger or retaliation, rather than self-defence".

He also notes the multiple blows inflicted upon Harvey, and says Khan had clearly intended to harm the 15-year-old.

Oli Constable
BBC News, Sheffield Crown Court

Harvey's dad, Mark, is leaning forward with his arms placed on the top of the glass barrier in the public gallery of Court 1.

He is listening intently to what the prosecuting barrister Richard Thyne KC is telling the judge.

The sentencing hearing could take some time, with the barristers still speaking with the judge about matters of law, including minimum jail terms.

Mohammed Umar Khan, who we can now name after the judge lifted reporting restrictions earlier today, is sat in the dock. He is looking down, speaking with an intermediary, and listening to the barristers speaking.

We hear how the boy, who is 15, had a history of carrying weapons in school.

Richard Thyne KC, prosecuting, tells the court that one area which is "pertinent" to the sentencing of Mohammed Umar Khan is what occurred on the morning of 3 February, when Harvey was killed.

"Our case was that Umar had told a number of lies," he says.

Khan's main defence was that he had suffered a legal loss of control at the moment he killed Harvey. The prosecution argued he had worked himself up and had intended to harm Harvey.

Two witnesses gave evidence that, after the two boys had squared up to each other in a science lesson, Harvey had told them Khan had been "acting like he had a knife".

A third pupil had told the court how, moments before the stabbing: "Umar just suddenly talked about a knife. I told him to give it to me before you do something stupid. But he didn't listen."

Khan has no previous convictions or cautions, but the trial heard he had taken a knife to school previously.

His mother had also found an axe in his bag in December 2024.

Sophie Willgoose (pictured below right with Harvey), the older sister of Harvey, has taken the stand to give a victim impact statement.

Image source, Family Handout/PA Wire

She tells the court how she and her parents were told the news of Harvey's death in a small room in Sheffield Children's Hospital.

"In that moment our world was shattered forever," she says.

Sophie describes his murder as "cruel and inhumane", and says Khan had "refused to take accountability".

"We live with constant reminders and triggers of the trauma," she said, including children in school uniforms and the police.

"The grief and trauma is exhausting."

The month after Harvey's death, their grandad became unwell, Sophie says.

He attended court daily to "fight for justice" for Harvey, but he sadly died last week, she adds.

"This was not just a crime against Harvey, this was a crime against all who loved him," she says.

"The fear, pain and grief will stay with us for the rest of our lives."

Five of the 12 jurors who sat on the trial throughout July have returned to Court 1 to observe the sentencing of Mohammed Umar Khan.

Journalists and others have been allowed back into Court 1 at Sheffield Crown Court.

Mohammed Umar Khan, 15, has also just arrived in the dock ahead of his sentencing for the murder of 15-year-old Harvey Willgoose.

The sentencing of the killer of 15-year-old Harvey Willgoose is due to continue at about 14:00 BST.

Here's what we know so far:

• Mohammed Umar Khan, 15, has been named by judge Mrs Justice Ellenbogen as the boy who murdered Harvey
• The judge lifted a restriction on Khan's anonymity during proceedings at Sheffield Crown Court earlier
• Khan was in Year Nine at All Saints Catholic High School in Sheffield - the same year as 15-year-old Harvey
• Khan fatally stabbed Harvey Willgoose during lunchbreak at the school on 3 February this year
• In August, Khan was found guilty by a jury at Sheffield Crown Court of Harvey's murder
• Mrs Justice Ellenbogen's sentencing and remarks can be watched here from about 14:00 BST as proceedings get back under way

The sentencing hearing at Sheffield Crown Court has now been paused.

It will resume again at 14:00 BST for the sentencing of Mohammed Umar Khan to begin.

We'll continue our reporting then.

South Yorkshire Police have released a picture of Mohammed Umar Khan, known as Umar, who is due to be sentenced today for the murder of Harvey Willgoose.

Image source, South Yorkshire Police

Khan is still aged 15, and is due to turn 16 in November, according to South Yorkshire Police.

Mrs Justice Ellenbogen has lifted the Section 45 reporting restriction, allowing us to name the boy who killed Harvey Willgoose.

The defendant, also 15, is Mohammed Umar Khan.

He goes by Umar and has been referred to as such throughout the trial.

Khan was in year nine when he murdered Harvey, his classmate at All Saints Catholic High School.

Lifting the restriction, Mrs Justice Ellenbogen said she had considered applications from media organisations including BBC News, PA Media, the Sheffield Star, and ITV News.

She deliberated for more than an hour.

She explained: "Knife crime in general and the circumstance of this case are of substantial public interest."