Agents from multiple federal agencies carried out immigration enforcement operations in Austin and San Antonio on Sunday, federal officials said.

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.

The U.S. Immigration and Customs Enforcement (ICE) agency along with the FBI, ATF and others have begun conducting targeted operations here in Chicago on Sunday to “enforce U.S. immigration law and preserve public safety.

A former FBI agent appeared Thursday on Newsmax to share his concerns about illegal immigration into the United States as

Nearly 1,000 people were arrested by federal agencies in a blitz to enforce immigrations policies across the United States, according to multiple reports.

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

With two top Trump administration officials in Chicago, federal law enforcement began a “targeted” immigration blitz Sunday, according to a spokesman for U.S. Immigration and Customs Enforcement. The agency did not say how many arrests have taken place so far.

A spokesperson for Immigration and Customs Enforcement said a range of federal agencies conducted "enhanced targeted operations" in Chicago on Sunday "to enforce U.S. immigration law and preserve public safety.

Here's what we know so far about ICE enforcement operations in the wake of several immigration-related executive orders Trump signed.

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.

Multiple federal agents assisting US immigration officials with raids directed by the Trump administration have been told to ensure their clothing clearly depicts their respective agency in case they are filmed by members of the media,