The alleged killer of right-wing activist Charlie Kirk appeared to take responsibility for the shooting on the messaging platform Discord, a company spokesperson has confirmed. Tyler Robinson, 22, messaged friends in a chat on Discord hours before he was arrested last week in connection with Kirk's shooting at an event at Utah Valley University. 'It was me at UVU yesterday. I'm sorry for all of this,' reads a message from an account that allegedly belongs to Robinson.

Robinson, who has not yet been formally charged, is due to appear in court on Tuesday. Arrested on suspicion of aggravated murder, felony discharge of a firearm, and obstruction of justice, he could face the death penalty.

The Discord messages which are said to be from Robinson were first reported by the Washington Post and are thought to have been written and posted towards the end of a manhunt for Kirk's killer that lasted more than a day. Charlie Kirk, 31, who was a controversial figure in US politics, was hit in the neck by a bullet while speaking at an open-air event held by Turning Point USA.

Law enforcement sources reported that Robinson and his friends bantered about the shooting before his arrest in a group chat on Discord. The spokesperson for Discord stated that an internal investigation found no evidence that the suspect planned the incident or promoted violence on their platform.

Investigators are trying to establish a motive for the killing, and have noted that Robinson was reportedly 'deeply indoctrinated with leftist ideology.' However, public records suggest he had registered as a nonpartisan voter. Robinson's parents are registered Republicans, indicating a potential family divide on political beliefs. Tyler Robinson is expected to face serious charges as the investigation unfolds.