A 12-year-old girl was set on by a gang of "feral" children who lured her to a park and filmed the attack on their mobile phones.
Police are appealing for information following the alleged assault in Liverpool at around 4pm on Saturday, April 22, reports Liverpool Echo.
Once at the park a large group of teens approached her and launched a sickening assault.
The footage has been shared online on social media platforms and shows the girl, 12, being knocked to the floor, punched in the face and kicked by an older girl.
As they tussle, a group of children surround the pair, with some aiming kicks at the 12-year-old.
One child shouts "smash her head in" and "chat s*** get banged" during the horrendous assault.
The girl's mum said it is "every parent's nightmare" and says she cannot bring herself to watch the footage of her daughter being attacked.
The mum continued: "I can't watch the videos - they are sickening. It shocked me to see this - she's not a fighter.
"These kids are feral - I've never seen anything like it. I think the most shocking part of it was the way boys who didn't even know her were joining in. You had older boys kicking her in the head.
"It was absolutely vile. I want to draw attention to it to try and make sure their parents are aware of what they did. This is how bad these children are."
The mum said she is looking to move house and also put her daughter into a new school following the vicious assault.
She said: "I'm not putting her back in that environment. It would be my fault if something like this was to happen again."
The 12-year-old victim reportedly suffered bruising and swelling to her face.
The unedited video showed the girl's face bloodied and bruised.
Her mum added: "She's very bruised and shook up, but she's not scared to go out the door. She's a resilient girl."
Merseyside Police confirmed an investigation into the assault has been launched, and it is understood that cops are in the process of reviewing footage and have urged witnesses to come forward.
Community Inspector Mark Berry commented: "This is an attack on a young girl who was left very shaken and distressed, and suffered injuries from the assault. It appears that this was a targeted attack on the young victim by a large group of girls, which is totally despicable and cowardly.
"This behaviour will not be tolerated. We will not stand by and allow people to harm and threaten the safety of others in our community and are looking to identify the offenders involved. If you were in the park at around 4pm and saw this incident then please come forward. Alternatively, if you have information on the assault which will assist us with our enquiries then please contact us so we can take positive action."
A Merseyside Police spokesperson said: "If you have any information please contact us via @MerPolCC on Twitter or Merseyside Police Contact Centre on Facebook, with reference 23000347940.
"You can also pass information anonymously via Crimestoppers on 0800 555 111. Always call 999 if a crime is in progress."
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