Overview

• Gov. Spencer Cox said Tyler Robinson, 22, is not speaking with investigators, while relatives and a cooperating roommate are providing information.
• Authorities say formal charges are being prepared after Robinson’s arrest following a 33-hour manhunt, with initial booking offenses including aggravated murder, felony firearm discharge, and obstruction.
• The Utah County sheriff placed Robinson on special watch for a mental-health evaluation as he remains jailed without bail.
• Investigators are analyzing forensic and digital evidence, including engraved shell casings with meme and anti-fascist phrases and Discord messages in which Robinson allegedly acknowledged being the gunman.
• New footage reported by TMZ appears to show Robinson walking near Utah Valley University hours before the shooting, as Turning Point USA prepares a Sept. 21 memorial in Arizona and communities hold vigils.