Brianna Ghey murder trial: accused spoke of research on serial killer, court told

Jury hears messages in which girl said she had been learning about killer known as the night stalker'

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A 16-year-old girl accused of murdering the teenager Brianna Ghey discussed killing her with a spiked McDonald's milkshake and said she had been researching an American serial killer known as the night stalker", a court has heard.

The girl, referred to as X to protect her identity, told her co-defendant, a 16-year-old boy known as Y, that she could talk about Richard Ramirez for like two hours", a jury heard.