Questions have swirled over whether the father of the man accused of killing conservative activist Charlie Kirk claimed more than $1 million in rewards after turning his son in to federal authorities, officials and public statements show.
Tyler Robinson, 22, was arrested late Thursday in southern Utah after authorities say he confessed to his father, identified by media reports as Matt Robinson, and was secured by the father before law enforcement took custody. The FBI had offered a $100,000 reward for information leading to the arrest of the gunman, and investor Bill Ackman publicly pledged to add $1 million to that pot. It remained unclear whether the FBI has designated a reward recipient and whether anyone in Robinson’s family has accepted payment.
Ackman said on X that he would honor his pledge if the FBI indicates who provided the information that led to the arrest. "Yes, we will pay the reward if it is earned to whomever the FBI indicates provided the information that led to Tyler's arrest," he wrote. Ackman added that rewards need to be paid even if the recipient is a "crook or worse," but he also said civil litigation or criminal prosecution could address any alleged involvement or negligence by a reward recipient. He acknowledged reports that the family might waive its right to any reward.
Prosecutors in Utah County said they are preparing to file capital murder charges against Robinson, which could expose him to the death penalty under state law. A virtual initial court appearance was scheduled for Tuesday afternoon, and Robinson has been held without bail since his arrest. Court records and public filings have not yet shown whether he has an attorney listed for his hearing.
Kirk, 31, the co-founder of Turning Point USA who helped galvanize Republican youth activism, was shot and killed on the Utah Valley University campus on Sept. 10, 2025, in an attack that drew national attention and debate. Utah authorities have said they are investigating the motive and examining whether Robinson was radicalized online. FBI Director Kash Patel said investigators recovered a text-message exchange in which the suspect said he had the opportunity to kill Kirk and intended to do so, and he quoted material the suspect used to justify the attack, saying the suspect wrote that "some hatred cannot be negotiated with."
Authorities have placed Robinson on "special watch" in the Utah jail system, a set of precautions intended, in part, to guard against self-harm in custody. Officials have said Robinson has not been cooperating fully with investigators, though they have interviewed friends and family members as part of the ongoing probe.
The FBI has also said it is investigating an online chat group that was reported to have included Robinson and in which messages purportedly plotted the shooting. Patel told reporters the agency is examining "a lot more than 20 users" associated with the chat. Discord, the messaging platform that was reported in some accounts to host the group, disputed that its service was used to plan the attack.
Public reactions have ranged across the political spectrum, with media figures, university officials and elected leaders responding to the killing and to social-media posts about Kirk. At least one university administrator was placed on leave after social posts were criticized, and a television anchor who gave a tearful on-air tribute to Kirk announced her resignation.
Neighbors provided surveillance footage to investigators showing a person believed to be the suspect moving near the university before and after the shooting, and law enforcement officials have said they are reviewing video as part of the timeline reconstruction.
As the criminal case moves forward, key questions remain about who provided information that led to the arrest and whether any reward will be paid. The FBI typically determines reward recipients in consultation with providing agencies, and payments are contingent on that determination. Ackman said he would abide by the FBI’s indication and that legal processes could address any alleged wrongdoing by someone who provided information.
Robinson is expected to appear for the virtual hearing this week after prosecutors finalize charging decisions. Authorities continue to investigate possible motivations, online contacts and any wider network of individuals who may have known about or assisted in planning the attack.
The case has prompted renewed scrutiny of political violence and online radicalization in the United States, and it has intensified debate over how law enforcement, platforms and private individuals respond to threats. The FBI and local prosecutors said they will release more information as the investigation and charging process proceed.
