Hours after Mrs Fuller last saw her children she was admitted to hospital after attempting to stab herself with a kitchen knife.

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He had multiple stab wounds, with the knife being plunged so deep that it had caused serious injuries to his kidney and liver.

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Quick used "a razor-type knife" to stab his victims, they added.

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She was up on attempted murder charges for trying to stab her husband with a butter knife.

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The boys' plan called for the older to stab the girl off-campus with a 3.25-inch knife last week, and the younger boy would scare off any responders with a .45-caliber Remington 1911 semi-automatic handgun, court documents said.

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She had tried to stab Ms Clark shortly before attacking Mrs Hodkin, who was a law firm accounts clerk, with a knife stolen from a butcher.

BBC: Nicola Edgington