Killer teen girl stabbed inmate in the face at Leeds jail in ruthless rampage

Judge said she is a “serious danger” to others

A convicted killer jailed for stabbing her mum’s boyfriend to death when she was just 14 has been handed a new sentence for a series of horror attacks on prison staff and inmates.

Teshira Knott-Davis was given a new, extended nine-year sentence at Leeds Crown Court this week after being deemed a serious danger to others.

She stabbed one inmate through the face with a makeshift weapon and smashed another’s head repeatedly on the floor.

Knott-Davis attacked inmates and staff at YOI Wetherby.placeholder image
Knott-Davis attacked inmates and staff at YOI Wetherby. | YEP

She admitted GBH with intent, three counts of ABH and assault of an emergency worker across three separate incidents.

The first two took place at YOI Wetherby in 2024, prosecutor Marte Alnaes said.

On March 1, 2024, Knott-Davis attacked a teacher at the institution after being warned for disrupting the lesson.

After throwing items at the woman, Knott-Davis then punched her, cutting her eyeball.

She then attacked officers who tried to restrain her, kicking out and even biting one to the breast.

Two months later on May 19, Knott-Davis approached another inmate, called her names before pulling out a whiteboard pen with a sharpened screw attached to the end and launched at her.

In the frenzy she stabbed her several times to her body and to the face. She struck her with such force the weapon became stuck in the victim’s cheek.

Before officers could step in, she punched her repeatedly while hurling abuse. She used such violence that the victim suffered a seizure on the floor and was left unconscious.

Having been moved from YOI Wetherby to HMP Bronzefield in Surrey, in September 2024, she attacked another inmate in her cell, punching her and dragging her to the floor by her hair.

She then slammed her head on the floor up to eight times, before dragging her across the floor and slamming her head against the wall up to four times. She then struck her four times with a metal bed post.

Mitigating, Philip Mahoney said Knott-Davis had only been 17 and 18 during at the time of the attacks. She is now 20.

She had been jailed in 2022 for the killing of her mother’s partner in October 2020.

Mr Mahoney said of her time in prison: “Depressingly, it did not seem to have done anything at that point [of the prison attacks].”

He said she had a “unspeakably awful childhood” and had spent the last six years locked up.

Medical reports concluded Knott-Davis suffers from a severe personality disorder, PTSD from her childhood, ADHD and has symptoms of psychopathy.

The judge, Recorder Sam Green KC gave her a new six-year jail sentence, with a three-year extended licence period to mark the dangerousness.

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