The Charlie Kirk murder trial has started, and early evidence points strongly at Tyler Robinson as the shooter, though some still suspect others were involved.

• Surveillance footage shows Tyler Robinson visiting the Utah Valley University campus four times before the shooting, appearing to scout the location even though he was not a student there.
• FBI testing found Robinson's DNA on a towel wrapped around the suspected murder weapon and on a screwdriver found on the roof, with his roommate's DNA also present.
• A university officer's body camera stopped recording right as he reached the rooftop because the battery died, which some see as suspicious.
• Doubts remain about a man named George Zinn, who stood up during the event claiming to be the killer, fueling belief that more than one person was involved.
• Robinson was not a student, and Donald Trump Jr. has highlighted his repeated campus visits as a key detail.

Outlook: The trial is expected to run for a while, but the evidence so far is building toward a guilty verdict for Robinson.