Federal law enforcement officials believe they have identified a person of interest in the assassination of Charlie Kirk, according to two U.S. officials and a law enforcement source speaking to CBS News between 9:31 PM and 9:45 PM UTC on September 11th, 2025. No arrest warrant has been issued, and no suspect is in custody at this time, though leads are being investigated. President Donald Trump commented on the progress of the investigation before departing for a Yankees game, stating, "I hear they’re making big progress and we’ll have to see what happens." Separately, Representative Marjorie Taylor Greene announced via X between 9:31 PM and 9:45 PM UTC on September 11th, 2025, that she is requesting Apple and the App Store remove a game on the Roblox platform that references Charlie Kirk's assassination. She also stated she is contacting the FCC to take down the Roblox website. Law enforcement sources previously confirmed that the gun and cartridges recovered from the Charlie Kirk shooting scene in Orem, Utah, are being transported to the FBI's laboratory in Quantico, Virginia, for advanced forensic analysis. The U.S. Marshals Service has joined the search for the shooter responsible for Kirk's assassination. The FBI previously announced a reward of up to $100,000 for information leading to the perpetrator's arrest. Investigators have been examining markings on ammunition recovered from the scene, which were initially interpreted by CNN sources as potentially linked to the transgender community, though this information remains unverified. The motive for the September 10th assassination in Orem, Utah, is still undetermined. Vice President Kamala Harris traveled to Salt Lake City on September 11th, 2025, to meet with Kirk's family. Kirk was shot from over 200 yards away while speaking at Utah Valley University on September 10th. President Donald Trump departed Joint Base Andrews en route to New York, New York, at approximately 9:21 PM UTC on September 11th, 2025. The Senate voted 53-45 along party lines to lower the threshold from 60 to a simple majority for procedural votes on resolutions to confirm multiple sub-Cabinet nominees between 9:16 PM and 9:30 PM UTC, a move described as a major overhaul of Senate rules. Senator Bernie Sanders commented on the rise of political violence, stating, "The murder of Charlie Kirk is part of a disturbing rise in political violence that threatens to hollow out our public life. No more political violence."