The video, which went viral within hours, shows several teenage girls taking turns to assault another girl, who appears to offer little or no resistance. The attack included kicks, punches, hair-pulling and knee strikes, while the attackers encouraged one another.

The footage also captures threats and laughter during the assault.

"Don't mention my mum or me. Wait, we're going one at a time. Don't go anywhere or you'll end up even worse," one of the girls says in the video. Another girl is seen applauding while a third repeatedly punches the victim. "Don't start crying now," they say.

The Guardia Civil identified the girls after the two videos circulated online. They have referred the case to the juvenile prosecutor's office.

The police also reminded the public that publishing images or personal data of minors without the appropriate consent is banned. Such conduct may constitute a criminal offence against privacy and may also lead to administrative penalties.

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