The Washington Post reported that James Alex Fields Jr., who last lived in Maumee, near Toledo, owned the auto used in the attack.
A 32-year-old woman was killed, according to police, who said they were investigating the crash as a criminal homicide.
The vehicle seen in photographs running over protesters at a white-nationalist rally in Virginia on Saturday afternoon has an OH license plate. He also is reported to have served in in the USA military. He was on active duty in the military for part of 2015.
He is in custody at Charlottesville County Regional Jail.