It's a new tactic that is happening in other cities across the country, but it appears immigration officials may have started in Phoenix first.

A spate of arrests at immigration courts across the United States this week has rattled people showing up for hearings and may signal a coordinated attempt at deportations under fast-track authority that President Donald Trump sharply expanded soon after taking office.

A Department of Homeland Security attorney told an immigration judge simply "circumstances have changed" in how prosecutors were handling cases.