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 to CBS, the BBC's US partner. According to the spokesperson, 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. im sorry for all of this, reads a message from an account that allegedly belongs to Robinson, according to the spokesperson and a law enforcement source.

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 and a trusted ally of President Donald Trump, was speaking at Utah Valley University on Wednesday at an open-air event held by Turning Point USA - the organisation he co-founded - when he was hit in the neck by a single bullet.

The killing of the popular social media personality sparked outrage, with Democrats and Republicans accusing each other of spreading hateful rhetoric, and a hunt for his killer. Utah's Governor Spencer Cox said Robinson had been arrested after confessing about Kirk's killing to his father and being persuaded to hand himself in. Law enforcement sources have told CBS News that Robinson and his friends bantered about the shooting before his arrest in a group chat on Discord involving more than 20 people.

The spokesperson for the platform said that an internal investigation by the company had found no evidence that the suspect planned this incident or promoted violence on Discord. Investigators have been trying to establish a motive for the killing. Cox has previously said that Robinson, a Utah native, was deeply indoctrinated with leftist ideology. Public records reviewed by the BBC suggest Robinson had registered as an unaffiliated, or nonpartisan, voter in Utah, and his parents are registered Republicans, according to state records. However, a family member told investigators that Robinson had become more political in recent years and had specifically mentioned Kirk's impending visit during dinner.

One of Donald Trump's top officials, deputy chief of staff Stephen Miller, has alleged there was an organised campaign behind the assassination, but no evidence has so far suggested Robinson was working as part of a group. Robinson is said to have been questioned in his group about whether he was the gunman, which he did not appear to reject, and there were also jokes from one group member about him needing to avoid McDonald's, where the alleged killer of UnitedHealthcare CEO Brian Thompson was arrested. Messages from the account thought to belong to Robinson also indicate that he was planning to hand himself in.

im surrendering through a sheriff friend in a few moments, thanks for all the good times and laughs, you've all been so amazing, thank you all for everything, reads one. Cox has said that Robinson was not co-operating with authorities but his roommate was among those who were. Investigators are also looking at social media accounts used by Robinson, according to CBS, and any signs that anyone may have known about or encouraged the shooting beforehand. Kirk, a devout Christian, was a strong supporter of gun rights, vehemently opposed abortion, was critical of transgender and gay rights, and promoted false claims about Covid-19. His supporters said he was relatable, understood their concerns, and was able to hold respectful debates with those he disagreed with, while his views drew fierce liberal criticism.