Utah Governor Spencer Cox said that a family of Utah Governor Spencer Cox said that a family member of Robinson's reached out to a family friend who contacted the Washington County Sheriff's Office.
Officials have identified the person accused of fatally shooting conservative activist Charlie Kirk as 22-year-old Utah resident Tyler Robinson.
Utah Governor Spencer Cox said at a press conference on Friday morning that investigators arrested and identified Robinson after analyzing surveillance footage, interviewing Robinson's family members and reviewing online messages between Robinson and his roommate.
"We got him," Cox said, standing with FBI Director Kash Patel and other law enforcement officials.

Robinson went to Utah State University for one semester in 2021, a spokesperson for the university confirmed to NBC News.
The event where Kirk was shot and killed was hosted by the school’s chapter of Turning Point USA, a group Kirk founded that organizes and mobilizes young conservatives.
President Donald Trump, who announced Kirk’s death on Wednesday, was again the first to share that the suspect in Kirk's slaying was in custody on Friday morning.
"I think, with a high degree of certainty, we have him — in custody ... everyone did a great job we worked with the local police, the governor, everybody did a great job,” he said in an interview on Fox News.
Trump suggested that the suspect's father turned him into authorities.
"Somebody that's close recognizes even a little tilt of the head, which nobody else would do," Trump said "And somebody that was very close to him said 'hm, that's him' and essentially went to the father, went to a US Marshal."
"And the father convinced the son, 'this is it,'" Trump added.
Trump repeatedly warned throughout the interview that his information was preliminary, saying he is "always subject to be corrected."
Video released by authorities Thursday captured the person they described as the shooter running across a building's roof and descending onto a grassy area below. The person can then be seen walking past a parking lot toward a busy road.
Further images released show what appears to be a young, thin man wearing a black long sleeved T-shirt with an American flag on it, black sunglasses, an Adidas hat, jeans and converse sneakers
Kirk's killing has prompted national outrage in recent days and a broad condemnation of political violence from lawmakers on both sides of the aisle.
"This is certainly about the the tragic death, assassination, political assassination of Charlie Kirk," Cox, a Republican, said. "But it is also much bigger than an attack on an individual. It is an attack on all of us. It is an attack on the American experiment. It is an attack on our ideals."
Turning Point USA has not publicly commented on the arrest or the identification of the suspect.
In a statement on Thursday, Turning Point USA said Kirk had faced "thousands" of threats throughout his life but “always prioritized reaching as many young Americans as possible over his own personal safety.”
