BREAKING: South Yorkshire girl murdered in random attack

Casey Kearney, aged 13, who was stabbed to death in Elmfield Park, South Yorkshire. Hannah Bonser, 26  has been charged with her murder.
Casey Kearney, aged 13, who was stabbed to death in Elmfield Park, South Yorkshire. Hannah Bonser, 26 has been charged with her murder.
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A WOMAN fatally stabbed a 13-year-old girl in a random attack in a park in Doncaster just months after spending time in a psychiatric hospital, a court has heard.

Hannah Bonser, aged 26, is accused of murdering Casey Kearney in Elmfield Park on Valentine’s Day.

Bonser told a friend she planned to “get” anyone who crossed her and bought two knives before stabbing Casey, Sheffield Crown Court heard.

Graham Reeds QC, opening the case for the prosecution, said Bonser had a “troubled history” and had spent a short time in a psychiatric hospital in October 2011.

She was in regular contact with outreach workers at Rethink - a service assisting those with mental health difficulties in Doncaster.

Mr Reeds described Bonser, of Cusworth House, Doncaster, as having few friends and “kept herself to herself”. But one friend described her behaviour as being “odd” after Bonser told her of plans to attack her ex-boyfriend just three days before Casey’s death.

Mr Reeds said Casey, from Rossington, near Doncaster, was walking through the park on her way to a friend’s house when Bonser stabbed her in the abdomen without warning, causing “irreversible and unsurvivable” damage.

Mr Reeds added: “The attack was sudden and caught Casey completely unawares. There was no argument, no shouting, there was no warning that anything was about to happen.”

Mr Reeds said Bonser accepted she had killed Casey and said it was likely she would claim the partial defence of diminished responsibility, which would reduce what she did to manslaughter. But he said the prosecution rejected the claim that the defendant “was suffering from an abnormality of mental functioning which arose from a recognised medical condition”.

Bonser, who appeared in the dock flanked by four security guards and wearing a baggy sky-blue T-shirt and grey tracksuit bottoms, denies murder. The case was adjourned until Tuesday.