Denver and Aurora were struck by immigration raids, residents and advocates were left processing what had happened to potentially dozens of their neighbors as federal law enforcement officials remained silent about how many people they detained.

It was unclear how many migrants were arrested in the Trump administration's latest immigration enforcement action. Residents said at least eight people were led away in handcuffs.

Federal enforcement operations are underway in metro Denver. Over the last few days, U.S. Immigration and Customs Enforcement focused on other cities, notably in the East.