Gang of teenage girls lure a 14-year-old girl to a party only to beat her up. A gang of teenage girls lured a 14-year-old 'friend' to a sleepover only to beat her up and post a sickening video of the 10-minute attack online. Cell phone footage shows at least five girls dragging Naomi Johnson on to the floor, hitting her over the head and stamping on her during the savage assault. Naomi can be seen struggling to escape as the girls pummel her for a full ten minutes in the video, which the cruel perpetrators later posted on Twitter to ridicule their victim. The beating took place in July and police have seen the footage - but none of the girls involved have been charged. Meanwhile, their school, in Anchorage, Alaska, has refused to take action. The footage shows the girls ganging up on Naomi and dragging her to the ground by her hair before smacking her over the head as she tries to wrestle herself free. Another girl then approaches and starts stamping on Naomi in what her parents are calling a 'life-changing' attack. Later in the video, which was taken by a friend of one of the assailants, the victim appears to have given up trying to defend herself and is seen curled up in the middle of the room as four girls kick and hit her head and body. One young boy intervenes by dragging one of the attackers away but does not stop the others from continuing the beating. He only holds back the teenager for a few moments before letting her go, and appears to be laughing as she runs back and plants a hard kick to Naomi's ribs. Naomi was left severely injured and medical bills - including scans on a lump on her carotid artery in her neck - soared to $40,000 following the attack. She was left emotionally damaged too and her parents, Wayne and Monica, have taken her out of school. "Things are just different now. I don't got to school. I don't hang out with my other friends," Naomi told Fox 4.