Read the affidavit on Bryan Kohberger’s arrest for the Idaho murders in full

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Authorities released an affidavit in support of suspect Bryan Kohberger’s arrest in the murders of four Idaho university students on Thursday as he appeared in court for his arraignment.

The affidavit is filled with horror new details about the 13 November killings of Kaylee Goncalves, Madison Mogen, Xana Kernodle and Ethan Chapin - and what led investigators to identify Mr Kohberger as the suspect.

Among the revelations was that a surviving roommate of the victims saw the masked killer in the home - and heard him say: “It’s okay, I’m going to help you.”

The affidavit also revealed that Mr Kohberger’s cellphone pinged in the vicinity of the home at least 12 times in the months before the murders - and may have returned to the scene hours after.

The DNA that linked Mr Kohberger to the killings was found on a knife sheath left next to the victims, the affidavit states.

Read the 18-page document in full below: