A 15-year-old boy has been stabbed and left with "serious injuries" at a school with classrooms put in lockdown. The teen was knifed at All Saints Catholic High School, on Granville Road, in Sheffield, at about 12.17pm today. Granville Road is currently closed from the tram stop to Fitzwalter Road. Emergency services rushed to the scene and helped the youngster while a 14-year-old boy has been arrested and is now in custody, according to South Yorkshire Police. An air ambulance has attended the incident at the school and dozens of police vehicles can be seen outside.

A spokesperson for the force has told people to avoid the area and has reassured parents that there is not considered to be a further risk at the school. "Teenager in custody following school stabbing. Following a stabbing at a school in Sheffield, a teenage boy has been detained by police and our officers are on scene," said the spokesperson. "At 12.17pm today (Monday, February 3) we received reports of a stabbing at All Saints Catholic High School on Granville Road in Sheffield. A 15-year-old boy is in hospital with serious injuries. His family is aware. 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.". And a statement from Yorkshire Ambulance Service read: “Ambulance resources are currently on scene at All Saints Catholic High School on Granville Road, Sheffield. No further information is available and South Yorkshire Police will be the lead agency.”.

Headteacher Sean Pender wrote to parents and guardians stating: “I am writing to inform you that today we have dealt with an extremely serious incident here in school resulting in us going in to a lockdown procedure. The incident involved two students, one of whom we believe has been seriously injured. All other students are contained and safe. “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.”.

Many people have taken to social media to express their shock. One person wrote on Facebook: "So sad when children aren’t even safe at school. Hope the boy recovers quickly." Another commented: "What’s this world coming too, you fear for your kids and grandchildren every time they walk out the door bout time knife crime was obliterated.. time to put scanners in schools it’s so out of control, stop giving them slap on wrist to do it again this is seriously getting out of hand.".

A manager of a community centre near to a school in Sheffield where a 15-year-old boy was stabbed said “children are afraid” as there has been an increase in crime in the area. Amaan Ahmed, one of the managers at Castle Asian Community Trust and Mosque in nearby Norfolk Road, said: “This area has seen an increase in crime recently. Cars are being stolen and vandalised, there has been an increase in anti-social behaviour – it is quite rampant in the area. It is concerning, especially being a community centre. We provide facilities for people to pray and we have children who are afraid. We are very saddened to hear the news from the school.”.

It comes just five days after the same school was put in lockdown, with staff and pupils being given the "stay put" order on January 29 over "threats of violence' between two students who were later "escorted off the site". It is understood that pupils are now being released from lockdown group by group and that children have been seen by the school gates. According to The Star, neighbouring site Seven Hills School, is also believed to be under lockdown. However, it is understood that the incident at All Saints doesn't involve Seven Hills School. The publication has reported that students appear to be leaving the school group by group, with a slow release.