Homeland Security officials have also said that ICE agents are facing a “1000% increase” in assaults, though the agency has not provided data to support

Shell casings near the suspected shooter contained anti-ICE messages, officials said in a news conference Wednesday.

Wednesday’s fatal shooting at a Dallas ICE field office was at least the fourth instance of violence or a threat at an ICE or Customs and Border Protection facility in Texas this year.

Police responded to shots fired at the U.S. Immigration and Customs Enforcement office in Dallas about 7 a.m. local time.

Officials are still working to recover Joshua Jahn's digital history, hoping it will shed more light on his motive and beliefs.

Officials still haven't released the identities of the three detainees shot at an ICE facility in Dallas, one fatally.

Administration officials repeatedly argue political opponents are fueling surge in threats against federal agents

"This violence is the result of the Radical Left Democrats constantly demonizing Law Enforcement, calling for ICE to be demolished, and comparing ICE Officers to 'Nazis,'" Trump wrote in a social media post on Wednesday, in which he said he had been briefed on the shooting.