U.S. President Donald Trump's top homeland security official joined officers in an immigration enforcement operation that arrested several people in New York City on Tuesday, in the Trump administration's latest effort to promote its nationwide crackdown.

Federal ICE agents launched raids in New York City early Tuesday as part of President Trump’s illegal immigration crackdown, Homeland Security Secretary Kristi Noem said. The agents hit at least three locations in the Bronx and took at least two people into custody, sources said.

In a display of force aimed at quickly increasing arrests and generating publicity, the administration targeted the nation’s largest city, where sanctuary policies limit official cooperation with ICE.