Officials with the U.S. Northern Command said that they started work Monday to prepare Buckley for use by Homeland Security as a temporary detention center.

Among President Trump’s many immigration policies implemented since he took office, his plan for mass deportations has rattled migrant communities in Colorado and beyond.

How many people arrested Sunday were connected to the TdA gang is unclear, but DEA officials said the number was in the dozens.

Undocumented immigrants have rights during arrests, a local hotline to detect ICE raids and other tools to handle deportations.

Federal agents interrupted a party at a "makeshift nightclub" north of Denver early Sunday morning and arrested almost 50 people of undetermined immigration status, a large number of whom are reportedly affiliated with the Venezuelan Tren de Aragua gang.

Drug Enforcement Administration officials said many of the immigrants were connected to Tren de Aragua and are in Immigration and Customs Enforcement custody.

Federal law enforcement agents took almost 50 people, including many who were undocumented, into custody Sunday in Adams County.

Federal law enforcement agencies, joined by local partners, raided what the Drug Enforcement Agency called a "makeshift nightclub" in Adams County on Sunday, resulting in 49 people arrested.

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

Federal agencies working in California pledged cooperation in immigration enforcement operations and posted photos of people being taken into custody.

Also Tuesday, Colorado Public Radio and CBS4 were among outlets that reported the U.S. military was preparing space at Buckley Space Force Base in Aurora for staging, processing and temporary holding of “criminal aliens” detained in ICE operations, according to a U.S. Northern Command statement.

Military officials have opened Buckley Space Force Base in Aurora to U.S. Immigration and Customs Enforcement agents to process and temporarily house detained immigrants. U.S. Northern Command opened the base to ICE on Monday at the request of the U.