Overview

• Gov. Spencer Cox said Tyler Robinson, 22, remains jailed and is expected to be formally charged on Sept. 16, but he has not assisted investigators.
• Cox said Robinson’s roommate, described as a transgender romantic partner, is cooperating with authorities as they assess whether any information bears on motive.
• An affidavit says four recovered casings bore meme and anti‑fascist phrases, and testing continues on a seized bolt‑action rifle linked to the shooting.
• Media reports citing law enforcement sources say the FBI is reviewing possible ties to pro‑trans or far‑left online groups, a developing line of inquiry not confirmed by officials.
• Separately, two men were taken into custody after a lit device placed under a news vehicle near the campus failed to function, which authorities called a significant public‑safety threat.