A deputy U.S. marshal is facing an investigation after he was caught on video smashing the cellphone of a woman who was trying to film police activity. A bystander’s video from the incident Sunday in South Gate, California, shows the marshal grabbing the cellphone out of Beatriz Paez’s hand as she tries to film, then throwing it to the ground and kicking it. Paez displayed her smashed phone as she spoke to local ABC 7 news.

Beatriz Paez: “He threw everything on the ground and smashed it with his foot. He stomped on it, and he kicked it.”