FIRST ON FOX: Orem, UTAH Police have arrested a suspect in the assassination of Charlie Kirk on a Utah college campus earlier this week.Kirk, a 31-year-old father of two, was sitting under a tent around 12:20 p.m. Wednesday, debating with students on hot-button current affairs issues, when a single shot rang out. Video from the scene shows him struck in the neck before he slumped out of his chair.He had been invited to speak at Utah Valley University by the campus chapter of Turning Point USA, a national conservative student group he founded."I think with a high-degree of certainty, we have him," President Donald Trump revealed on Fox & Friends Friday morning. He added that, "essentially, someone who knew him turned him in."Trump did not provide the name of the suspect, nor the name of who turned the suspect in.PERSON OF INTEREST IN CHARLIE KIRK ASSASSINATION PICTURED IN PHOTOS RELEASED BY FBITrump said he hopes the suspect gets the death penalty if found guilty. He also explained how investigators found the suspect with help from a minister, a member of the U.S. Marshals Service and the suspect's father."We have the person that we think is the person we're looking for, but they drove into the police headquarters, and he's there now," Trump said.Witnesses screamed in horror and fled for cover after the bullet struck Kirk in the neck. He was rushed to a hospital and later pronounced dead.Other video circulating online appears to show a dark-clad figure on a rooftop. Authorities said the gunshot came from about 200 yards away, likely from a perch atop the Losee Center building, which is on the opposite side of the plaza from where Kirk was speaking.COMPLETE COVERAGE OF CHARLIE KIRKInvestigators recovered a "high-powered, bolt-action rifle" along the route the suspect is believed to have used to escape, according to FBI Salt Lake City Special Agent in Charge Robert Bohls.The FBI released images of a man in black they were calling a "person of interest" in connection with the shooting. Bohls said they also found a palm print, footprint and imprint from a forearm.Fox News Digital witnessed investigators collecting a surveillance camera from the side of a home on a street adjacent to the campus.VIGILS HELD ACROSS US AFTER ASSASSINATION OF CHARLIE KIRK: 'WE MUST HEAL'The homeowner said the camera recorded someone running through backyards after the shooting.This is a breaking news story. Check back for updates.