Border czar Tom Homan told NBC News that several people with criminal convictions were apprehended in Chicago.

Targeted immigration enforcement operations by multiple agencies were launched in Chicago Sunday, with top Trump administration officials in the city to oversee the operation. Multiple sources told CBS News Chicago that those held by ICE Sunday have active warrants.

A top Department of Justice official and President Trump’s “border czar” were in Chicago overseeing “immigration enforcement efforts,” according to officials. “The DEA, along with our

Immigration enforcement operations in Illinois are expected to continue Monday and through the week as top Trump administration officials, including “border czar” Tom Homan and the acting deputy attorney general,

Acting Deputy Attorney General Emil Bove, appointed by President Donald Trump, will oversee the efforts of the FBI, DEA, ATF, U.S. Marshall Service, and federal prosecutors.

Immigration and Customs Enforcement partnered with the Drug Enforcement Administration, the Bureau of Alcohol, Tobacco, Firearms and Explosives, Customs and Border Protection, and other agencies for the enforcement action Sunday.