A 15-year-old teenage has reportedly died after being stabbed at a Sheffield school, police said.
The teenager, known locally as Harvey Willgoose, was killed at All Saints Catholic High School on Granville Road in the city at around 12:17 GMT.
Police and paramedics were called, but the teenager died shortly after.
According to South Yorkshire Police, a 15-year-old boy has been arrested on suspicion of murder and is currently in police custody.
Assistant Chief Constable Lindsey Butterfield told a press conference the police was working “at pace to build a full picture of what had happened and how this tragedy unfolded.”
“We urge you to be mindful that there are loved ones at the centre of this,” she added.
The head teacher of the school, Sean Pender, had sent a message to parents on 29 January about a lockdown at the site.
In the message, he said the action was due to “threatening behaviour between a small number of students.”.
When questioned about the reports, ACC Butterfield said she could not share any information relating to it.
She concluded the press conference by urging people to avoid speculation and the sharing of content online “which could be distressing to them [the family] and detrimental to our investigation.”
Asked about the incident while on a trip to Brussels, Prime Minister Sir Keir Starmer stated that his first thoughts “as a father” were with the victim’s family.
“The terrible stabbing in Sheffield is one where I think the whole country would want to reach out to the family, to the friends, to the school, and the entire community in their grief and mourn with them,” he said.
Louise Haigh, the MP for Sheffield Heeley, said the news was “horrific,” and her thoughts were with all affected.
“Serious questions will have to be answered about how this could have happened,” she said, adding she will work with the school, police, and the council “to make sure they are.”