The teenage girl who killed seven-year-old Katie Rough had been taken out of school over mental health issues and had warned she was "mentally not okay" just two days earlier.

The 15-year-old asphyxiated Katie on a playing field with a gloved hand before using a Stanley knife to make a 6cm slash to her neck and 20cm cut to her torso while suffering from nightmarish "macabre" delusions.

She had wanted to test whether or not her victim was a robot, Leeds Crown Court heard. She left drawings of stick men "inflicting killing and death" beside Katie with a note saying: "They are not human, they are not real".

The court was told the teenage girl's behaviour had been "flagged up" over a suspicion she was suffering from psychosis.

But although she was prescribed the drug fluoxetine for anxiety and depression in December 2016 and was put into the care of Child and Adolescent Mental Health Services (CAMHS), she had not been given a full psychiatric assessment.