THIS IS the moment a 17-year-old boy slashed at pupils and teachers with broken glass after storming a school screaming "I'm going to kill you". Video footage shows Louis Melotte launching into a frenzied attack in the reception area of Birley Academy in Sheffield, South Yorkshire, before being bravely apprehended by two staff members. 9 Louis Melotte, 17, has been given a 10-year extended sentence Credit: Supplied 9 Melotte was seen on CCTV arriving at Birley Academy in Sheffield on May 1 Credit: South Yorkshire Police 9 Melotte entered the reception area with a piece of glass concealed under his sleeve Credit: South Yorkshire Police 9 Melotte quickly launched his attack on a pupil Credit: South Yorkshire Police He was today given a 10-year extended sentence comprising five years in a young offender institution and an extended licence period of five years.

Melotte posted a series of disturbing messages on social media and warned people "today is the day" before walking into the school and assaulting three people, including a 12-year-old pupil. Following the sentencing, South Yorkshire Police released CCTV footage which shows the attacker entering the school grounds with a shard of broken glass hidden up his sleeve. He can then be seen talking to a receptionist before attacking his youngest victim who escaped any harm thanks to the quick-thinking of Molly Bulmer and Alicia Richards.

READ MORE NEWS 'DISGRACEFUL' Two mums with 11 kids between them jailed after rampaging during .