A criminologist on MSNBC said Friday that messages etched into bullet casings recovered near the weapon used in the fatal shooting of conservative activist Charlie Kirk do not establish a clear motive, even as investigators press a criminal case and online conspiracies proliferate.

Casey Jordan, a criminologist who appeared on "MSNBC Reports," said the phrases found on spent and unfired rounds — including slogans such as "Hey fascist! Catch!" and references to the Italian anti-fascist song "Bella Ciao" — were insufficient to identify why the suspect allegedly targeted Kirk. Authorities on Friday identified the suspect as 22-year-old Tyler Robinson and said he was taken into custody Thursday evening in southern Utah. Utah Gov. Spencer Cox described the killing as a "political assassination."

Police said they recovered a bolt-action Mauser .30-06 rifle along with several spent casings and unfired rounds that had words and symbols etched on them. Authorities have detailed inscriptions that also included phrases such as "If you read this, you are gay LMAO," the single word "Notices," and a sequence of arrows. Jordan told MSNBC host Ana Cabrera she would need to examine the items directly and the context in which the words were written to offer a more definitive interpretation, and she characterized the markings as resembling "rantings of a really immature child."

Jordan said investigators must learn more about the accused shooter's recent behavior and online activity. She also noted similarities between the inscriptions on the weapon in the Kirk case and markings found on weapons in a recent Minnesota Catholic school shooting, and said that suggested the act may have been conceived in a short time frame after the shooter learned of Kirk's scheduled campus appearance.

Charlie Kirk, 31, founder of Turning Point USA and a prominent figure in conservative youth politics, was shot Wednesday while speaking at Utah Valley University in an event that drew thousands. He was rushed to a hospital and later died. Kirk's appearance was part of an "American Comeback Tour" of college campuses.

Kirk's widow, Erika Kirk, addressed the nation Friday night in a livestream and described her husband as a devoted father and man of faith. She thanked law enforcement, first responders, members of the Turning Point USA team and national political figures who reached out, and she vowed to preserve his legacy.

Erika Kirk said in the livestream that her husband "went home to see the face of his savior and his God," and she pledged that "no one will ever forget my husband's name" and that the organization's tour would continue. She recounted telling the couple's 3-year-old daughter that Kirk was on a "work trip with Jesus," and she appealed to supporters to keep his mission alive.

Kirk speaking at event

The killing triggered a surge of online misinformation and conspiratorial posts, the Anti-Defamation League said Friday. The ADL reported more than 10,000 posts on X tying the killing to Israel, reflecting a wave of accusations and unverified claims that circulated within hours of the shooting. The posts included assertions that Israeli actors or Jewish organizations were responsible, claims that referenced Kirk's support for Israel and resurfaced past clips in which he discussed accusations levied against him.

The ADL said those posts and similar false narratives are examples of how "bad actors" exploit breaking news and tragedies to advance antisemitic themes. The report noted that some widely viewed posts and accounts that pushed the narratives remained active on X as of Friday. Platform changes and enforcement policies have been cited by advocates as a factor in the persistence of some problematic content.

The killing also reverberated abroad. Turning Point UK, a group associated with Kirk's organizing in Britain, held a vigil outside Parliament and said its members had received online threats. Prominent British figures, including former Reform UK leader Nigel Farage and several Conservative shadow ministers, condemned calls for violence against other public figures and urged authorities to investigate threats. Social media sites reported spikes in celebratory and violent posts after the shooting; Bluesky's chief executive issued a rebuke after users posted messages glorifying the attack and naming other public figures as possible targets.

The immediate law-enforcement response included several arrests and personnel actions. Police in Utah arrested a 38-year-old man, Russell Kim Kennington, who was accused of entering an area cordoned off as a crime scene while wearing a lab coat and taking photographs and video. An affidavit cited by local media said Kennington crossed two lines of crime-scene tape and later admitted to investigators that he had been "reminiscing and filming the scene." He was booked on suspicion of capital obstruction of justice and criminal trespass.

Separately, military and federal agencies took administrative actions after social-media posts that celebrated or mocked the killing. The Pentagon confirmed a U.S. Marine, Capt. Jacoby Williamson, was removed from recruiting duties pending investigation after posting an image that appeared to mock Kirk. The U.S. Secret Service placed an agent on administrative leave after a now-deleted social-media post described the killing as "karma," agency officials said.

Authorities have said a roommate of the suspect provided investigators with chat messages from the messaging app Discord that referenced a rifle reportedly wrapped in a towel, engraved bullets and a scope. Gov. Cox said the suspect had become "more political" in recent months and had expressed dislike for Kirk to family members; the governor also described the recovered etchings on the casings when discussing evidence. Officials said the mauser rifle was found in a towel in a wooded area along a route they believe the suspect took after firing a shot from a distant roof before fleeing.

Law-enforcement officials have said Robinson is expected to be formally charged early next week. Utah authorities said he could face capital murder charges; if convicted, the death penalty would be a potential sentence. Investigators continued to seek a clearer motive and canvass digital traces that might explain planning or intent.

The shooting intensified a national conversation about political violence and the safety of public speech. Governor Cox said the attack "cuts to the very foundation of who we are" and framed it as a threat to freedom of expression. Turning Point USA officials, allies and opponents have debated the implications of the killing for campus events and political discourse, and vigils were held in multiple cities.

Investigators have urged the public to avoid spreading unverified information and said official statements and court filings will provide the most reliable details as the case advances. Authorities said the probe remains active and that any evidence tied to motive, planning or complicity will be developed through forensic examination and interviews.