A bombshell ballistics finding could reshape the case against Tyler Robinson, the 22-year-old man charged with killing conservative activist Charlie Kirk. Defense attorneys have requested a six-month delay for a preliminary hearing scheduled in May, citing federal testing that failed to connect the fatal bullet to the alleged murder weapon.
Court filings reveal that an analysis from the Bureau of Alcohol, Tobacco, Firearms and Explosives could not conclusively link a bullet fragment recovered during Kirk’s autopsy to the rifle found near the scene of the Sept. 10 shooting on the Utah Valley University campus in Orem.
The FBI is now conducting additional tests, including a comparative bullet analysis and bullet lead analysis, according to court documents filed Tuesday in Fourth District Court in Provo, Utah.
Robinson’s defense team argues it needs time to review an enormous volume of material, including the inconclusive ballistics analysis that may prove critical to clearing their client. The defense said it expects an initial review of digital evidence alone to take 60 days, having received a hard drive containing 31 hours of audio files, 700 hours of video, and 600,000 data files. Prosecutors, meanwhile, aim to demonstrate they have enough evidence to proceed with a trial and are seeking the death penalty against Robinson, who faces charges of aggravated murder.
The ATF’s report has been kept private, but attorneys have cited snippets in public filings indicating the results were inconclusive. The success of a forensic ballistics analysis largely depends on the size and condition of bullet fragments. Experts search for unique, microscopic markings left on a bullet as it passes through a gun’s barrel—scratches that function like fingerprints because no two firearms make identical markings.
Prosecutors point to other forensic evidence they say ties Robinson to the killing — DNA consistent with his was found on the trigger of the rifle, the fired cartridge casing, and two unfired cartridges, according to court filings.
Defense attorneys counter that forensic reports indicate multiple people’s DNA was found on some items, which they say requires more complex analysis than prosecutors have suggested.
Robinson has not yet entered a plea in the case. Adding pressure from the other direction, Kirk’s widow, Erika Kirk, filed a speedy trial motion in January 2026, invoking her rights as a victim under Utah law and accusing the defense of causing “undue and unwarranted delay” in the proceedings. Prosecutors have said Robinson texted his romantic partner that he targeted Kirk because he “had enough of his hatred,” a statement that could prove damaging at trial.
The case has generated intense media scrutiny, prompting Robinson’s legal team to file a separate motion seeking to exclude cameras from portions of upcoming court proceedings. Robinson is expected back in court on April 17 for a hearing on that motion, during which the judge will weigh whether certain proceedings will allow media access.
In a motion filed in late February, Robinson’s defense team said they planned to introduce evidence demonstrating “harmful and prejudicial media coverage” of the case. The attorneys clarified they were not asking for the entire evidentiary hearing to be closed—only portions that include potentially harmful content.
The defense cited Kearns-Tribune Corp. v. Lewis, a 1984 Utah Supreme Court case that outlines circumstances in which a judge can exclude the public and media from preliminary hearings. Skye Lazaro, a Salt Lake City-based criminal defense attorney not associated with the Robinson case, explained the legal distinction at play: “What this case does is differentiate between a trial and, as here, a preliminary hearing.”
Robinson appeared during a hearing in Fourth District Court in Provo on Dec. 11, 2025, and sat beside defense attorney Kathryn Nester during a subsequent hearing on Jan. 16, 2026. Judge Tony Graf Jr. presides over the case and has already denied a defense motion to disqualify the Utah County Attorney’s Office from prosecuting — a bid the defense filed in December 2025, alleging a conflict of interest involving a prosecutor’s adult daughter who was present at the scene. He is also expected to consider arguments to ban media coverage from future hearings.
The ballistics evidence dispute injects significant uncertainty into what prosecutors initially presented as a straightforward case. Law enforcement sources told Fox News the ATF was unable to match the bullet because it hit bone and broke on impact, leaving only fragments—making ballistics analysis impossible.
Kirk, the 31-year-old co-founder of Turning Point USA, was shot and killed on the Utah Valley University campus in what authorities characterized as a targeted attack. The shooting sent shockwaves through conservative political circles and triggered a massive law enforcement response.
President Donald Trump and Vice President JD Vance both issued statements following Kirk’s death. Trump announced Kirk’s death on social media, calling him “great and even legendary” and later praising him as a “martyr for America’s freedom” during a memorial service. Vance credited Kirk with helping elevate him to the vice presidency.
As the case moves forward, the inconclusive ballistics analysis represents a potential turning point. If the FBI’s additional testing similarly fails to definitively link the bullet fragment to the rifle, the defense could argue that reasonable doubt exists about whether Robinson fired the fatal shot, even if his DNA appears on the weapon.
The preliminary hearing, now requested to be delayed until later this year, will determine whether prosecutors have sufficient evidence to proceed to trial on the aggravated murder charge that carries a potential death sentence.