John Moore via Getty Images Immigration and Customs Enforcement agents are planning to detain thousands of migrant families on Sunday, one week after Trump announced plans for mass deportation.

U.S. Immigration and Customs Enforcement will launch raids across the country on Sunday to target immigrant families who have received deportation orders, according to reports. News of the raids come less than a week after President Donald Trump announced that “millions” of deportations would happen as early as next week.

The Washington Post first reported the planned Sunday raids on Friday afternoon, citing three unnamed U.S. officials with knowledge of the orders. The Miami Herald later reported that Miami would be among the first cities to be raided.

The raids on Sunday will target up to 2,000 families, according to the Post. ICE and Department of Homeland Security officials are referring to the plan as “family op,” an apparent reference to the intention to target families.

At least nine other major cities are reportedly being targeted, including Atlanta, Chicago, Baltimore, Denver, Houston, Los Angeles, New Orleans and San Francisco, according to the reports. All of the cities have large immigrant populations.

Trump tweeted about the deportations on Monday night, saying the migrants would be “removed as fast as they come in.”