Two plainclothes Immigration and Customs Enforcement agents left a man partially handcuffed on the ground Monday after they attempted to arrest him at Harry Reid International Airport in Las Vegas and onlookers confronted them, according to police and federal officials.

A video of the incident obtained by CNN shows a man in a light blue polo shirt yelling as he’s being held to the ground by the agents. His shoe had fallen off, and his luggage was pushed over to the side.

The agents – a woman with a white crossbody bag, wearing a hooded sweatshirt and a face mask, and a man in khaki pants, hooded sweatshirt and backpack – appear to handcuff him, video shows.

During the encounter, onlookers stopped and can be heard on video questioning the ICE agents. As more travelers stopped, a uniformed Transportation Security Administration officer stood in front of the agents and the man, creating a makeshift perimeter, video shows.

“Back up, it’s law enforcement,” a TSA officer can be heard saying. “Everyone back up.”