Will Kolic, who works on the block and knows the manager witnessed the incident. He spoke with NBC Chicago about what he saw.

Kolic said he saw cars pull up and grab a man who he said appeared Hispanic.

"Other people came and started screaming stop it,” he said.

Kolic said federal agents then “jumped out of their car” and grabbed the manager of the Laugh Factory while he was with his mother.

As seen in the video, the agents and the manager and his mother engaged in a physical altercation at the scene. It is unclear from the video who initiated the physical contact. At one point, the manager’s mother can be seen being forcibly held to the ground by federal agents.

The manager was detained after he “attempted to impede and obstruct federal officers,” according to a statement from a Border Patrol spokesperson. The statement alleges that the manager attempted to shut the door of the federal agents’ car on an agent’s leg.

“The individual was immediately detained and turned over to the FBI for investigation,” Border Patrol said.

It was not immediately known if the manager’s mother was also detained. Additional details on the man Kolic first saw detained were not immediately available.

“They didn’t do anything,” a person at the scene can be heard saying on video.

“Let us see your face,” another person at the scene said.

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