A social worker for U.S. Rep. Jerry Nadler, D- N.Y., is still “traumatized” after a Department of Homeland Security officer handcuffed and detained her inside the congressman’s lower Manhattan office, an official in Nadler’s office said Sunday.

The caught-on-video Wednesday clash drew outrage from Nadler. “If this can happen in a member of Congress’s office, it can happen to anyone — and it is happening,” he said in a statement.

The incident sparked off as federal agents were arresting several immigrants in a Manhattan immigration court building on Varick Street in the West Village. Nadler’s office is on the sixth floor of the building.

A video posted by Gothamist Friday shows a Department of Homeland Security officer with the agency’s Federal Protective Service cuffing the woman as she weeps in a hallway. “Do not resist! Stop resisting!” a male voice can be heard off-screen as someone else says, “She’s not resisting.”

Another officer, described by Nadler’s co-chief of staff as a DHS commander, confronts a second staffer at the door to the congressman’s office, demanding entry. “I’m a federal officer. I’m checking on something. We have the right to check,” he tells her.

He says doesn’t need a warrant to come inside when she objects. “You’re harboring rioters in the office so if there’s not a problem let’s walk inside,” he tells the staffer at the door before she steps aside.

There were no known reports of rioting at the Varick Street building at the time. Several protesters were pepper-sprayed and arrested hours later that evening.

“She’s traumatized. It’s a young woman that was handcuffed and detained. There was no right to come into our office, and DHS’s statement is a total fabrication and lie,” said Robert Gottheim, Nadler’s co-chief of staff, referring to a DHS statement to news outlets that they went there “to conduct a security check.”

“DHS’s statement that they were coming in for a safety check doesn’t mesh with the video,” Gottheim said.

The cuffed staffer was detained for about 40 minutes before she was released without charges.

A DHS spokesman didn’t return a message seeking comment Sunday.

“From the outset, my number one concern was for the safety of my staff. While no arrests were made and the situation was quickly deescalated, I am alarmed by the aggressive and heavy-handed tactics DHS is employing,” Nadler said in his statement. “The decision to enter a Congressional office and detain a staff member demonstrates a deeply troubling disregard for proper legal boundaries.”