Authorities in California are investigating a potential hate crime after a man was seen driving through a crowd of protesters at a Stop Asian Hate rally over the weekend while yelling racist slurs.

Video posted to Instagram on Sunday shows demonstrators appearing to exchange words with the driver of a black Honda Civic while the vehicle is stopped at a red light in the city of Diamond Bar, which is east of Los Angeles. As the protesters walk past the car along a crosswalk, the vehicle appears to drive through the red light and do an illegal U-turn while driving toward one of the demonstrators.

The driver shouted racial epithets including one targeting Black people and fuck China as he drove away, local station KCAL reported .

No injuries were reported during the incident, authorities said.