Charlie Kirk Murder Trial - UT v Tyler Robinson - Pre-Trial Day 2

Main points from Day 2 of the Charlie Kirk Preliminary Hearing, UT v. Tyler Robinson: Witness 1: Agent David Hull (State Bureau of Investigation) Prosecution Points: • Surveillance Documentation: Surveillance footage from Utah Valley University (UVU) shows an individual believed to be Tyler Robinson arriving and leaving the campus on multiple occasions on September 10 and 11, 2025. • The Shooter’s Movements: Video captures an individual on the roof of the Losee building who low crawls to the edge, waits for approximately 15 to 30 seconds, and then jumps off the roof. • Identification of the Suspect: Agent Hull identified Robinson based on a distinct gait, specific clothing • The Weapon: Enhanced video of the individual jumping off the roof shows him carrying a long, dark object that appeared to be a firearm. • Voluntary Surrender: Robinson turned himself in to the Washington County Sheriff’s Office after reportedly informing his family he was involved in the shooting. Defense Points: • Lack of Visual Clarity: The video of the individual on the roof does not show facial features or distinguishing marks. • Alternative Explanations: Spectators who saw the individual on the roof prior to the shooting believed the person was police "Overwatch" for the event. • Missing Physical Evidence: No bullets or casings were found on the Losee roof or in the immediate area around the building. • Other Potential Suspects: Other firearms were found on the scene that day, including a handgun in a discarded backpack and a reported gun in a holster found in the amphitheater. Witness 2: Sergeant Jennifer Faumuina (SBI Evidence Response Team) Prosecution Points: • Evidence Collection: A screwdriver was collected from the Losee rooftop "perch," and a Mauser 98 rifle wrapped in a towel was found in a wooded area where the suspect was seen entering. • DNA Links: Forensic testing by the FBI (Exhibit 31) indicated that Robinson’s DNA was a contributor to the samples found on both the screwdriver handle and the towel. • Statistical Strength: The results showed the DNA on the towel was 1.7 octillion times more likely to be a mixture of Robinson and his roommate than an unknown unrelated person. Defense Points: • Inconclusive Scene Data: The defense reserved the right to cross-examine Sergeant Faumuina further after other testimony was completed. Witness 3: Amanda Bakker (FBI Forensic Examiner) Prosecution Points: • Expert Qualifications: Bakker has over 10 years of experience at the FBI laboratory and works within an accredited facility that follows strict standard operating procedures. • Strong Support for Inclusion: Using the "very strong support" standard mandated by the Department of Justice, the statistical likelihood ratios for Robinson being a contributor to the evidence were extremely high. • Validation of Methods: The software used (STRmix) is developmentally and internally validated and widely used in over 120 laboratories worldwide. • Major Contributor Status: In the DNA mixtures found, Robinson aligned with the "major contributor," making up approximately 89% to 95% of the DNA in the samples. Defense Points: • Subjectivity of Interpretation: Bakker originally concluded there were three contributors to the towel sample but changed her determination to two contributors after discussing "elimination samples" with investigators. • Assumptions in Testing: Bakker assumed the roommate, Lance Twiggs, was a contributor based on investigator requests, even though the software run for him alone was "uninformative". • Technical Limitations: The testing used only measures the length of DNA segments (STRs) and cannot distinguish between "isoalleles," which are segments that have the same length but different internal sequences. • Destructive Testing: The FBI consumed the entire swabs for several items, leaving only tiny amounts of liquid extract, which the defense argues makes independent re-testing nearly impossible. 00:00:00 - UT v Tyler Robinson Day 2 00:07:19 Agent David Hull: Resuming Direct Examination 00:23:29 Video Narration: Suspect Movements on Campus 00:35:49 Suspect Fleeing: Jumping Off Roof and Crossing Drive 00:36:41 Vehicle Identification and Contact with Officer Goforth 00:54:06 Cross-Examination: Agent David Hull 01:05:05 Circumstances of Tyler Robinson's Surrender 01:21:48 Redirect: Police Rifle Practices 02:27:42 Sgt. Jennifer Faumuina: Processing Physical Evidence 02:31:54 DNA Testing Reports: Screwdriver and Towel 02:38:50 Amanda Bakker (FBI): DNA Expert 02:52:41 Technical Explanation: DNA Transfer and Persistence 03:05:44 Reliability Debate: PCAST Report and Mixed Samples 03:19:01 Determining the Number of Contributors (NOC) 03:31:35 Analyst Discrepancy: 3 Contributors vs. 2 Contributors 04:18:11 Consumptive Testing and Sample Preservation 04:36:19 Redirect: Lab Accreditation and STRmix Validation