President Trump's border czar, Tom Homan, says sanctuary cities are now his priority after the shooting of a Customs and Border Protection agent over the weekend in New York City.

Immigration enforcement operations in sanctuary cities are now the priority of the Trump administration, and Immigration and Customs Enforcement (ICE) will "flood the zone" with agents, according to "border czar" Tom Homan.

President Donald Trump and his administration Monday sought to use the shooting of an off-duty Customs and Border Patrol agent in a Washington Heights park to bolster his hard-line stance on crime and immigration.

An off-duty U.S. Customs and Border Protection (CBP) agent was shot in a New York park on Saturday, footage shows. The Department of Homeland Security (DHS) named Miguel Francisco Mora Nunez, a citizen of the Dominican Republic, as one of the suspects.

The Department of Homeland Security arrested a second suspect in connection with the shooting and attempted armed robbery of an off-duty U.S. Customs and Border Protection officer in New York City on Saturday.