This morning, prosecutors in the Idaho College Murders case saying Brian Coburger's homework could play a crucial role in the trial.

In a new filing, prosecutors say the alleged killer turned in what amounts to be a crime scene how to guide as part of a homework assignment in 2020.

Some of the details mirroring the Idaho College murder scene.

Prosecution is trying to make the argument that this information plays somewhat of a playbook, not leaving evidence behind a crime scene.

The 12-page crime scene scenario final from his time at DeSales University, detailing how an investigating officer would process a scene where a deceased white female had been found,

including the use of protective clothing to avoid contaminating the scene or leaving fingerprints.

While Koberger's lawyers say he is innocent and argue he has a developmental disability

that prevents him from having the speed and coordination to carry out the murders,

prosecutors point to purchases he made,

including a balaclava, a type of ski mask that covers the head, but not the eyes. They say he

bought it in January of 2022. Prosecutors sharing this never-before-seen image drawn by the surviving

roommate in the days after the murders, showing what they say appears to be that

kind of mask. She told authorities, the man behind the mask that she saw in the house that night,

bushy eyebrows. And another purchase in the spotlight. Kbar Knife and Sheath bought on the Amazon

account Coburger used, similar to the knife and sheath seen in this image from the Amazon website.

But the defense arguing that anyone from the suspect's family could have made the purchase

from that Amazon account. Well, prosecutors also say they can provide testimony from witnesses

with knowledge that Coburger is the one who purchased the knife. The murder weapon has never

been found. And prosecutors also say that Coburger searched Amazon one who purchased the knife. The murder weapon has never been found,

and prosecutors also say that Coburger searched Amazon

for a replacement knife after the murders.

So, you know, that evidence is extremely powerful,

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