Three teenagers attacked a girl like a "pack of wild dogs" before they left her naked in a park, a court heard.

Katie Douglas, 18, Melissa Lamb, 17, and Tracey Fagbohun, 16, all carried out the "dreadful" assault on the victim after she was taken by car to Lister Park in Bradford in July 2001.

The teenage girl - who cannot be identified for legal reasons - was punched, kicked, scratched and stripped to her underwear.

A pair of scissors was then used to cut off her underwear and clumps of her hair during the 20-minute ordeal.

After she was left naked, she ran to a nearby house and the alarm was raised.

Douglas, of Etna Street, Bradford, Lamb, of Parkwall Road, Cardiff, and Fagbohun, of Heath Road, Undercliffe, Bradford, all pleaded guilty to a charge of assault occasioning actual bodily harm.

Sentencing them to a detention and training order for 12 months, Judge Geoffrey Kamil said: "I make it absolutely crystal clear that I regard this as being a dreadful offence in which a young girl was subjected to a prolonged beating where she was battered literally black and blue. In effect, the three of you set on her like a pack of wild dogs."

Prosecutor David Dixon described how the girl met Douglas and got into a car before she was driven to the park.

Before they arrived at the park, Fagbohun and Lamb were picked up on the way. An argument broke out after the girl was accused of having sex with another woman's boyfriend. Douglas dragged her out of the car, threatened to kill her and started kicking and punching her.

Mr Dixon told the court Fagbohun and Lamb began trying to remove her clothes. The girl was bruised and clumps of her hair were missing.

Mitigating for Douglas, Nikki Peers said her client admitted kicking the girl in the face. She said Douglas was " genuinely sorry". Representing Fagbohun, Jon Oultram said she regretted the "ugly" incident that got out of hand.

Mitigating for Lamb, Nicholas Askins said she accepted she seized the scissors and cut the girl's hair.