In a school of a school, classrooms in 'Lockdown' has seen because a 15-year-old boy with 'serious injuries' is taken to the hospital.
All Saints' Catholic High School, in Sheffield, South Yorkshire, has warned parents that a 'serious incident' has happened and 'currently inside'.
The message that was sent to parents and guardians said, “Students are released when the police give permission.”
The local population has said that an air ambulance is on site.
It is only five days after all Saints' was locked earlier, where staff and students received the 'Stay Put' order on January 29 about 'threats of violence' between a 'small number of students'.