Robinson faces multiple charges, including aggravated murder in connection with the shooting. He has not yet entered a plea, and his lawyers have objected to much of the video evidence.
Prosecutors in the case are seeking the death penalty.
Kirk’s widow Erika, who came face-to-face in court for the first time with her husband’s alleged killer on Monday, was in the courtroom again, the New York Times reported.
Prosecution witness David Hull, Utah’s State Bureau of Investigation’s lead investigator on the case, walked the court through the security footage on Tuesday.
The footage shows the man, allegedly Robinson, appeared twice in a parking garage on the day of the killing, Hull testified.
Earlier in the morning, he was wearing a maroon shirt and gray or olive shorts; the same man returned just before the killing in different clothes and seemingly walking with a limp, the lead investigator said.
The video then showed the suspect making his way to the Losee Building on the campus and rolling over a railing onto the rooftop.
Minutes after the shot rang out, the same man can be seen running across the roof, dropping down with an unknown object in his hands and making his way off campus, Hull testified.
Hull said that, in the early hours of 11 September – while a manhunt for Kirk’s killer was underway – an officer near campus had made contact with Robinson and took down his licence plate.
