Authorities are piecing together evidence against Tyler Robinson, the 22-year-old Utah man arrested last week in connection with the fatal shooting of conservative activist Charlie Kirk at Utah Valley University.

FBI Director Kash Patel confirmed that Robinson’s DNA was found on a towel wrapped around a rifle recovered near the scene. Patel said investigators recovered the contents of a note Robinson attempted to destroy, on which the suspect wrote he had an opportunity to “take out” Kirk and planned to do so. Authorities have stated that Robinson has not been cooperating with law enforcement.

Robinson is being held without bail at the Utah County Jail on charges of aggravated murder, felony discharge of a firearm, and obstruction of justice. Authorities have said they intend to pursue capital murder charges. He has not cooperated with investigators and is on special watch pending a mental health evaluation.

Ammunition recovered with the rifle has become a central focus of the case. Shell casings bore engravings that included the phrase “Hey fascist! Catch! ↑ → ↓↓↓,” a sequence of arrows with reported ties to the video game Helldivers 2. Other casings reportedly contained lyrics from the antifascist anthem “Bella ciao” and the mocking line “If you read this, you are GAY Lmao.” Experts caution that such messages may have been chosen for their ambiguity, reflecting a pattern in which shooters employ memes or satire that resist straightforward interpretation.

Robinson’s background has also come under scrutiny. He was enrolled in an electrical apprenticeship program in St. George and is registered as an unaffiliated voter. Records show he did not vote in recent elections, and officials say he has no prior criminal record. Family members told investigators that Robinson had become “more political” in recent years and expressed dislike for Kirk’s views. His parents are registered Republicans, and relatives said political discussions within the family often included criticism of Kirk. Robinson’s roommate, who is reportedly his romantic partner and is transgender, has been cooperating with investigators and reportedly had no knowledge of the shooting.

Speculation has circulated over possible links between Robinson and the far-right Groypers, a movement led by Nick Fuentes that often targeted Kirk as too moderate. Symbols on the recovered casings suggested to some analysts a connection to Groyper imagery. However, investigators have not confirmed any direct ties between Robinson and the group. Fuentes has publicly denied involvement, saying his followers are being “framed” and disavowing violence.

Utah Governor Spencer Cox has said people close to Robinson described him as influenced by leftist ideology, though this has not been independently confirmed. Cox also noted Robinson’s increasing engagement with online communities and “dark corners of the internet,” which are now under review by investigators.

The investigation remains active, and officials have said more evidence will become public when formal charges are filed. For now, Robinson’s motives remain unclear, with authorities continuing to sort confirmed facts from speculation.