In a gut-wrenching school stabbing that has ignited fury over knife crime in Sheffield, 15-year-old Harvey Willgoose lay dying in a hallway after being knifed through the heart by former friend Mohammed Umar Khan on 3 February 2025, as CCTV captured the brutal nine-second attack during lunch break at All Saints Catholic High School.
The teen murder unfolded from a petty social media spat tied to bullying fallout, escalating to tragedy when Khan, a knife-obsessed pupil, lunged with a 13cm hunting blade, severing a rib in the fatal blow that left classmates screaming in chaos.
