Horrific footage has emerged of the moment a disabled teenage girl was tortured during a brutal attack by three girls.
Attackers lured the 17-year-old disabled girl to a picnic spot in Victoria on Monday morning before they smashed her head into a table and tortured her.
During the 2.5 hour attack, the intellectually disabled victim was forced to inhale glass from her smashed iPhone and had her hands burnt on a hot barbecue before her head was repeatedly slammed into a table.
Detective Senior Sergeant Michael told Channel 10 the "footage is pretty graphic" and that "a lot of senior police officers here say it's one of the worst assaults they've seen in some 30 or so years here".