Chilling! Discord & gun casings - How authorities confirmed Tyler Robinson as Charlie Kirk's killer

Authorities say a series of digital messages, unusual bullet casings and campus surveillance footage led them to identify 22-year-old Tyler Robinson as the man behind the assassination of conservative activist Charlie Kirk. Robinson was taken into custody in Utah after days of intense investigation and public appeals.

Also read: Who is Tyler Robinson? Suspect arrested over Charlie Kirk’s murder
Utah Governor Spencer Cox said Robinson’s own online activity provided a key breakthrough. His roommate gave investigators access to Discord, a popular messaging app, where Robinson had allegedly discussed retrieving and concealing a rifle. “The content included references to leaving the rifle in a bush, wrapping it in a towel, watching the area, and even engraving bullets,” Cox told reporters. Investigators photographed the incriminating messages directly from the device.

Messages, casings and a rifle

Police later recovered a bolt-action rifle wrapped in a towel near the scene. Three unfired casings were found with the weapon, carrying chilling inscriptions: “Hey, fascist! Catch!” alongside arrow symbols. Cox confirmed the bullets appeared to have been engraved in advance, matching details from the Discord exchanges.

Also read: Who is Matt Robinson, Charlie Kirk shooter Tyler Robinson's dad who turned him in?
Surveillance footage from Utah Valley University showed Robinson arriving in a Dodge Challenger on the morning of the attack. He was seen in a maroon T-shirt, shorts, a black hat and light shoes — clothing consistent with what he wore when investigators encountered him the following day.

Family members told investigators Robinson had spoken negatively of Kirk in the weeks before the shooting. At a family dinner, he allegedly mentioned the activist’s upcoming appearance at UVU and criticised his views. Cox said Robinson had grown more political in recent years and was increasingly hostile to conservative figures.

Arrest and reaction

President Donald Trump confirmed the arrest during a Fox News interview, calling it a “significant breakthrough” in a case he described as a “political assassination.” He said a close acquaintance of Robinson had identified him and turned him in. “With a high degree of certainty, we have him,” Trump said.

Kirk, 31, co-founder of Turning Point USA, was shot once while addressing students at UVU on Wednesday. He died later in hospital. The FBI and state officials said the attack was targeted, sparking fresh alarms over political violence in America.

Grisly footage of the shooting, widely shared online, showed Kirk collapsing after being struck in the neck. More than 7,000 tips poured into investigators before Robinson’s arrest.

Vice President JD Vance, who visited Kirk’s family, called him a “friend and organiser who shaped this administration.” Trump said Kirk would be posthumously awarded the Presidential Medal of Freedom.