Police are probing a sickening attack on a teenager have arrested a 12-year-old girl on suspicion of assault. LancsLive reports Olivia Allan was jumped by four girls on Out Moss Lane in Morecambe, Lancashire, as she walked home from school.

Distraught mum Keighley Marie told the publication that after the attack last Monday (March 24), medics told her 13-year-old Olivia could have sustained brain damage if she had received any more blows to the head. Ms Marie said footage, circulated on social media, showed a person climbing on to Olivia's back before "raining down blows" on to her face. A passer-by intervened in the incident and then called emergency services.

Olivia sustained chipped teeth, a damaged back and neck, as well as bruises and footprint marks on her legs. She spent three nights in hospital being treated for her injuries.

Mental health nurse Ms Marie said the incident, which happened close to Trimpell Sports and Social Club, Olivia's attackers "kicked her head like a football, stamped on her face and put a tooth through her lip".

She said: "It's every parent's worst nightmare. I was at work in Lancaster when I got a call about what had happened and it was obviously school time so there was traffic and I was in an absolute frenzy trying to get to her.

"It just felt like it went on forever. The consultant in A&E said that if she had taken any more blows to the head, she could have been permanently brain damaged."

A spokesperson for Lancashire Police said enquiries were ongoing, adding: "We received a report of an assault on Moss Lane, Morecambe, at around 3.40pm on March 24, 2025. A teenage girl suffered injuries and was taken to hospital for treatment. She has since been discharged.

"Enquiries are ongoing, and a 12-year-old girl was arrested on suspicion of assault. Anyone with information or footage is asked to contact us on 101 quoting log 0928 of March 24."

Ms Marie explained the woman intervened between the girls and restrained the perpetrator, before contacting the emergency services. She then waited with Olivia until the police arrived.

Ms Marie added: "Olivia's recovering physically, but what she's experienced mentally with the trauma is going to be a much longer process.

"The trauma Olivia has gone through and the trauma me and her dad have gone through is horrendous. I've got two other children to try and care for. It just feels like an injustice."