The investigation into the murders committed by Stephen Griffiths began when a caretaker reviewed disturbing CCTV footage.

Prosecuting, Robert Smith QC, said a caretaker lived at the flat building where Griffiths lived.

It was his job to review footage taken from CCTV cameras at the flats each morning.

On May 24, he reviewed the footage at 8.30am. The court was told he reviewed footage from camera 14.

The footage showed Suzanne Blamires running out of Griffiths's flat, followed by the defendant, the court heard.

She was later seen being dragged on the floor by her leg by Griffiths, Mr Smith said.

Griffiths was seen to have something in his hand, the prosecutor added.

The court was told the woman was shot with a crossbow before Griffiths "gestured" by holding a finger up to the CCTV camera.

Mr Smith told the court how Griffiths told arresting officers: "I'm Osama bin Laden".

The prosecutor said once in a police station he told officers: "I've killed a lot more than Suzanne Blamires - I've killed loads.

"Peter Sutcliffe came a cropper in Sheffield.

"So did I but at least I got out of the city."

The court heard he told police he put a poisonous substance in a shop and said he called himself "Ven Pariah".

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