The victim, who has been recovering from her injuries, has posted about the incident on social media, writing: "I did not know this boy who did this to me."

The girl - who we are not naming - was stabbed during the second period of the day at Thorpe St Andrew School on Wednesday.

The incident is understood to have happened in or near the maths block toilets, after the victim had left her classroom.

Her attacker fled the scene, and the school was put into lockdown, with pupils told to hide........

© Norwich Evening News