Homeland Security Secretary Kristi Noem joined an immigration enforcement operation in New York City on Tuesday.

Noem posted a brief video of an arrest to her social media account.

The secretary is witnessing both criminal and civil enforcement operations, according to sources familiar with the actions in New York.

The criminal case involves a member of a Venezuelan gang that took over an apartment complex in Aurora, Colorado, the sources said. One alleged gang member was arrested in the Bronx.

The New York division of the U.S. Drug Enforcement Administration said it was working with partners at the Justice Department and the Bureau of Alcohol, Tobacco, Firearms and Explosives to assist the Department of Homeland Security with enforcement efforts.

Noem’s appearance for the operations came just days after she was confirmed by the Senate.

Noem, the former governor of South Dakota, will be charged with overseeing Trump’s immigration crackdown along with “border czar” Tom Homan.

“The Trump Administration will once-again empower our brave men and women in law enforcement to do their jobs and remove criminal aliens and illegal gangs from our country,” she said in a statement after her confirmation. “We will fully equip our intelligence and law enforcement to detect and prevent terror threats and will deliver rapid assistance and disaster relief to Americans in crisis.”