A Catholic school is in lockdown while a 15-year-old has been left seriously injured following a stabbing.
A 14-year-old boy has been arrested after the stabbing took place at All Saints Catholic High School on Granville Road, South Yorkshire Police said.
Police were called shortly after 12.15pm.
The 15-year-old was hospitalised with serious injuries. His family have been notified.

A 14-year-old boy has been arrested after the stabbing took place at All Saints Catholic High School on Granville Road
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The police force said: “Emergency services are on scene and the school grounds currently remain closed.”
“Granville Road is closed from the tram stop to Fitzwalter Road, and we are urging people to avoid the area while emergency services carry out their work.
“We would like to reassure parents of pupils that we do not deem there to be a further risk at the school and further updates will be shared when possible.”
Images shared on social media show an air ambulance landing near the school while parents congregate at the police cordon.
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The closure marks the second time the school has gone into lockdown within a week.
It is the second time that the school has gone into lockdown within a week.
According to reports, headteacher Sean Pender sent a message to parents on January 29, saying: “The reason for the lockdown was due to threatening behaviour between a small number of students where threats were made of physical violence.”
One parent said that they were keen to get their child home after they heard rumours about what had happened.

It is the second time that the school has gone into lockdown within a week (Stock)
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“Until we get kids out and get home and speak with them to find out more, we cannot say more things about it,” they told the BBC.
“Kids were getting panicked, we had a lot of calls, even now,” they said.
Earlier today, Pender contacted parents to inform them of the news, saying: “The police and paramedics are present in school. Once the police allow us to, we will be releasing all students from school.
“I understand the level of anxiety you will be feeling without knowledge of the nature of the incident but at this time I have limited information to share with you whilst we have police and paramedics on site.
“I will endeavour to update you with as much information as possible at the earliest opportunity. We ask for your prayers and support at this time.”