Overview

• Tyler Robinson, 22, is being held without bail on suspicion of aggravated murder, felony firearm discharge, and obstruction, according to court records.
• Investigators say a cooperating roommate, identified in multiple reports as Lance Twiggs, supplied texts referencing engraved ammunition and a rifle “drop point,” aiding Robinson’s arrest.
• Police recovered an imported .30‑06 Mauser bolt‑action rifle wrapped in a towel in nearby woods and collected casings etched with taunts and meme‑culture phrases.
• Screenshots reported by the New York Times show Robinson joking in a private Discord chat and calling the suspect his “doppelganger,” while Discord says there is no evidence the attack was planned on its platform.
• Authorities are scrutinizing Robinson’s online activity and relationships to assess motive; Utah’s governor characterized the suspect as steeped in leftist ideology, and prosecutors say a death‑penalty decision is possible.