At least one person was killed after white nationalists clashed with counter-demonstrators in Charlottesville, Virginia, on Saturday, prompting the governor to declare an emergency and halt a rally over removing a Confederate general's statue from a public park.
"I am heartbroken that a life has been lost here," Charlottesville Mayor Mike Singer said on his Twitter feed. "I urge all people of good will - go home."
Tensions in the city intensified hours after the melee when at least one vehicle plowed a crowd of people gathered in a street two blocks from the park. Multiple people were injured in the incident, the Charlottesville Police Department said on its Facebook page.
Fox News Channel reported that the driver of the car had been arrested.
It was not clear whether this incident was connected to the earlier confrontations. But a video shown on CNN appeared to show a silver sedan driving at high speed into the crowd before reversing.