The Federal Bureau of Investigation announced the arrest of a suspect in the shooting and killing of Charlie Kirk, and there is a flurry of speculation about the man's motivations.
Here's what we know so far about 22-year-old Tyler Robinson.
The messages engraved on the bullets appeared to refer to anti-fascist slogans, leading some to speculate that he was a part of the Antifa movement.
Robinson lived in Washington, Utah, which is about 260 miles away from the location where Kirk was shot. He has two younger brothers, and his mother works as a social worker.
Early reports said his father worked for the Washington County Sheriff's Office, but the office has denied the claim on social media. Other reports indicated he works in construction. A spokesperson from the sheriff's offi