The man accused of assassinating Charlie Kirk was being held Friday at the Utah County Jail.

22-year-old Tyler Robinson was arrested on suspicion of aggravated murder, felony discharge of a firearm causing serious bodily harm, and obstruction of justice charges, according to a court affidavit.

The Associated Press reporter Eric Tucker explains the update of Charlie Kirk shooting in Utah.

“Federal local authorities laid out a series of evidence that they say connects Mr. Robinson to the crime. That includes engravings found on bullet casings that were in the rifle. That's believed to have been used in the attack," said Tucker.

"They also cite information from people close to Robinson that he had become more political in the run up to the killing, and that he had expressed a distaste for Charlie Kirk's political viewpoints," added Tucker.

A judge ordered that he be held without bail. Formal charges are expected to be released early next week.