The Kandivli police on Thursday booked a 15-year-old student of Std X for allegedly injuring a classmate with a knife, outside their school on November 26. A video of the attack, which was filmed by a local resident, went viral on social media.

The victim, whose left hand was seriously injured, was admitted to Trident Hospital where he underwent surgery. After receiving 19 stitches, he was discharged on Wednesday.