do they know who killed charlie kirk

Yes, authorities know who killed Charlie Kirk. The suspect arrested for the fatal shooting of Charlie Kirk is identified as 22-year-old Tyler Robinson, a resident of Utah. Robinson was apprehended after a family member or close associate reported or indicated his involvement to law enforcement. He was captured following a manhunt, with evidence including surveillance footage and trace evidence collected from the scene. Robinson faces charges including aggravated murder and other related felonies. The shooting occurred during an event at Utah Valley University where Kirk was speaking, and the weapon recovered is believed to be a high-powered bolt-action rifle. This case has been described by some officials as a political assassination. President Donald Trump confirmed the suspect's arrest and stated that the suspect was turned in by someone close to him, reportedly his father. Tyler Robinson does not have a prior criminal record and was a registered voter in Utah with no declared political party affiliation.