A TEENAGER admitted having dark fantasies about murdering schoolgirl Brianna Ghey — but denied she actually killed her, a court heard.

       The 16-year-old, identified only as Girl X, said, when challenged on the thoughts: “I don’t know where it comes from.”

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       A teenager admitted having fantasies about murdering Brianna Ghey but denied killing her, a court heard Credit: PA

       Jurors heard she had become obsessed with torture and killing after watching the dark web.

       Brianna, 16, was knifed 28 times in Warrington, Cheshire, in February.

       A handwritten note of an alleged murder plan to kill Brianna, which was found in Girl X’s bedroom, was presented yesterday at Manchester crown court.

       Girl X is on trial with another teen, Boy Y, for murder, and both accuse each other of killing Brianna.

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       The trial continues.

       She previously claimed that Brianna had left her and Boy Y, also on trial for murder, in the park to go and meet a lad.

       Recently, she said she went to “hang out” with Boy Y and Brianna.

       Girl X said: “I thought I would walk around.

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       “I heard a noise and saw Boy Y stabbing Brianna.”