Crime Scene and Evidence - The defendant allegedly entered the residence through the kitchen sliding door and killed Madison Mogen and Caitlyn Gonzalez with a knife on the third floor [1] - A KBAR knife sheath with single source male DNA was found next to Madison Mogen's body [1][2] - Zana Kenodal and Ethan Chapen were also killed with a large knife, each suffering multiple wounds [4] - A roommate saw the defendant dressed in black leaving the house through the kitchen sliding door [6] - No evidence of sexual assault was found on any of the victims [5] Defendant's Actions and Movements - The defendant's car was seen leaving the area at a high rate of speed approximately 15 minutes after the roommate saw him [6] - The defendant drove south of Moscow on back roads to avoid surveillance cameras [7] - The defendant's phone was located south of Moscow and then tracked heading back north towards Pullman, Washington [8] - The defendant's phone returned to the area of King Road for about 10 minutes around 9:00 AM [9][10] - The defendant searched for a KBAR knife and sheath and attempted to delete or alter his purchase history on Amazon [12] - The defendant changed his car registration from Pennsylvania to Washington [13] Investigation and Arrest - DNA from trash pulled from the defendant's parents' residence in Pennsylvania matched the DNA found on the knife sheath [15][16] - The defendant's car was meticulously cleaned inside [18][19] - The defendant had studied crime and crime scene processing [20]

Case Summary - Brian Cobberger is accused of the 2022 killings of four University of Idaho students [1] - A possible plea deal is being considered, potentially removing the death penalty [2] - The resolution is unexpected by at least one victim's family [3] Evidence - DNA evidence found at the scene is said to match Cobberger [5] - A knife sheath was found at the scene [5] - A car seen at the crime scene was traced back to Cobberger [5][10] Legal Proceedings - Jury selection was scheduled for August 4th, and the trial for August 18th [6] - The defense attempted to delay or move the case, but the judge denied these attempts [8] - The judge rejected the defense's attempt to introduce other suspects due to lack of evidence [9] Investigation - Authorities traced DNA back to Pennsylvania within a month of the murders [7] - The FBI tracked Cobberger and his father for four days before arresting him in Pennsylvania [11] - A white Hyundai Elantra was a key piece of evidence in tracing Cobberger [9][10]