PROVO — The preliminary hearing for Tyler Robinson is expected to wrap up Friday morning in Provo. But it will still be several weeks before a decision is made on whether there is enough probable cause to bind him over for trial.

Robinson, 23, is charged with 10 crimes, the most serious being aggravated murder, in the death of conservative political activist Charlie Kirk, who was shot and killed on the campus of Utah Valley University on Sept. 10, 2025. A preliminary hearing is held to determine whether there is sufficient probable cause to go to trial on the charges levied against a defendant.

The Utah County Attorney’s Office finished calling their witnesses to testify on Thursday. Robinson’s defense team, who have already called two forensic experts from the FBI and ATF to testify, are expected to call one more on Friday before resting. Robinson has been attempting to cast doubt on the reliability of DNA testing, arguing that test results are subjective.

Prosecutors have objected several times to the line of questioning, arguing that it falls well outside the bounds of what is needed for a preliminary hearing. Even 4th District Judge Tony Graf warned defense attorney Michael Burt on Thursday during one line of questioning, “I feel we are exiting the orbit of probable cause.”

At the end of a preliminary hearing, both sides typically give closing arguments, and the judge decides if there is enough evidence for a defendant to proceed to trial. On Thursday, Graf granted a defense motion for each side to first submit briefs summarizing their arguments. The state will submit its brief by July 28, followed by the defense’s reply on Aug. 11 and the state’s rebuttal on Aug. 18. After that, another hearing will be held on Sept. 1 for both sides to present their cases in court.

Also on Thursday, portions of the video interview of Robinson’s roommate and boyfriend at the time of Kirk’s death, Lance Twiggs, were shown to the courtroom after much debate.

In addition, screenshots of the text messages exchanged between Twiggs and Robinson, a note Robinson left for Twiggs and messages on Discord that Robinson allegedly sent to his friend group prior to turning himself in, were all displayed in court.

For each piece of evidence introduced during the week-long hearing, Graf has had to decide:

1. Whether to admit that evidence into the record;
2. Whether that evidence should be shown to everyone in the courtroom;
3. Whether that evidence can be filmed by the livestream camera broadcasting the hearing.

Robinson’s defense team remains adamant that broadcasting evidence to people outside the courtroom will jeopardize their client’s right to a fair trial by prejudging a future jury pool. Prosecutors want the evidence shown to everyone for the sake of transparency. Graf has compromised on several pieces of evidence by allowing them to be displayed to people in the courtroom but not on the livestream feed.

The extended debates over what evidence can be shown to the public and what is only viewed by attorneys and the judge have prompted Jeff Neiman, the attorney for Erika Kirk and the Kirk family, to address the courtroom several times, both in person and in a briefing filed Wednesday night, calling on the court to make all evidence public.

“For 10 months, the victim’s family has waited for this preliminary hearing. Erika Kirk, the widow of Charlie Kirk, and his grieving parents traveled to this courtroom for one reason: to be present at these proceedings and to bear witness to the evidence concerning the death of their husband and son. At certain points throughout the preliminary hearing, the Kirk family sat in the room while evidence was admitted but not presented for their viewing. They were present in body, yet denied the very thing their presence was meant to secure: their ability to meaningfully observe the preliminary hearing,” Neiman said. “The victim’s family’s position is simple. At a minimum, every exhibit entered into evidence during the preliminary hearing must be visible to every person lawfully present in the courtroom.”

Erika Kirk and Charlie Kirk’s parents have been in the courtroom all week for the preliminary hearing.

At Neiman’s request, Graf agreed that at the end of court on Friday, he will show to the courtroom only the enhanced UVU surveillance video allegedly showing Robinson’s movements across the roof of the Losee Center and when he drops off the roof and runs to a wooded area off Campus Drive. The video includes moments in which film editors zoom in on the alleged gunman and impose a red circle around him to make it easier to view. The video was originally submitted as evidence but was only shown to Graf and attorneys.

Friday’s hearing begins at 9 a.m. Watch it livestreamed here:

2025

Offseason Changes

The Board of Public Utilities (BOPU) traced the presence of a bacterium discovered in its wastewater treatment facility earlier this year to Goat Systems LLC, a Meta contractor for the tech company’s in-progress 715,000-square-foot data center campus, according to recent public notices from the BOPU.

The bacterium did not enter Cheyenne’s drinking water supply and was found in systems used for irrigation purposes only. Cupriavidus gilardii is a rare organism typically found naturally in water and soil. Infections from this bacterium are extremely rare, BOPU said, but can pose a threat to elders and immunocompromised individuals directly exposed to it.

It was discovered during routine testing in February, prompting BOPU to temporarily suspend the city’s reclaimed water irrigation program and terminate Meta’s discharge privileges. 

The board also announced last week it would not accept industrial wastewater discharges associated with fill-and-flush operations—which circulates, then flushes purified water to eliminate construction debris and residue—nor closed-loop cooling systems popular in data centers that circulate coolants mixed with water.

The board classified the incident as “significant non-compliance with federal pretreatment regulations.”

“Over the past two months, BOPU staff have undertaken significant remediation efforts, including draining and disinfecting the entire reuse water system and Prairie View Pond to eliminate any remaining bacterial presence,” one notice said.

Cheyenne’s BOPU declined Fortune’s request for comment and said it will hold a press conference in the next week with additional details on the situation. 

A Meta spokesperson told Fortune the company is supporting Fortis, its general contractor, in its efforts to resolve the problem, and that Fortis began testing its own water through a third-party environmental specialist, who found no traces of the bacterium.

“When the board shared that it found a substance in the city’s wastewater—not public drinking water—Fortis immediately stopped discharging industrial wastewater and began hauling it offsite,” a spokesperson said in a statement. “Meta is committed to being a good neighbor in Cheyenne, including through the protection of local water resources, and will continue encouraging collaboration between Fortis and the board until this situation is resolved.”

Pollutants from data center construction and operations are part of the mounting anxieties Americans have around the exploding growth of AI infrastructure around the country. A recent Gallup poll found about 70% of Americans somewhat or strongly oppose the construction of data centers in their local area. While half of respondents cited environmental concerns, such as excess water usage and deforestation, 16% of respondents cited pollutants, including air and water contamination, among reasons for their opposition.

Meta announced the construction of the Cheyenne data center in July 2024, saying it would be the company’s 21st data center in the U.S. and 25th globally. According to the company, Cheyenne provided access to infrastructure and energy and had a large talent pool from which to recruit.

Meta projected that the $800 million investment would sustain more than 1,000 construction jobs at the height of the build and support 100 jobs once completed. The campus is one of 27 data centers in Cheyenne and 31 in Wyoming. By comparison, Northern Virginia has the most data centers in the country, with about 550.

The tech company, for its part, previously said it would allocate resources toward the energy grid and water-cleanup efforts, including working with Black Hills Energy and the Laramie County Conservation District to restore Crow Creek, which recharges the state’s Ogallala Aquifer.

“Meta wants to be a positive contributor in communities like Cheyenne,” the company’s announcement said. “And that includes investing in the energy grid and supporting local water restoration projects.”