After failing to locate additional victims, Bagley secured the scene and inspected a nearby rooftop, where he discovered indentations in the gravel that led him to suspect a sniper had been positioned there.
David Hull, a former agent with the Utah State Bureau of Investigation, testified regarding video footage captured on the day of the shooting.
The evidence, presented by the prosecution, reportedly shows Robinson arriving on campus, departing, and later returning in different clothing.
Hull detailed footage depicting a person—identified by authorities as Robinson—entering a rooftop area, running, and crouching in a prone position until a shot was fired at 12:23.
The person was then observed descending from the roof and exiting the campus.
Additionally, evidence indicated that Robinson’s vehicle was on campus on the morning of September 11.
Police documentation noted an interaction between an officer and the driver, during which specific details and a partial license plate were recorded, eventually leading to the identification of the vehicle's owner.
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While the prosecution and defense have engaged in disputes over the editing of certain videos intended for clarity, prosecutors are continuing to introduce testimony and digital evidence to support the charges against Robinson as the five-day hearing progresses.
