Humboldt County civil rights groups are preparing for a change in administration — and with it, an expected increase in deportations. Some are gearing up for more activity from Immigration and Customs Enforcement locally.

A person familiar with the planning said immigrants in Chicago will be targeted in multiple locations. A document reviewed by NBC News said raids will occur over several days.

The size of the planned immigration raids is unclear, but they would be the opening step in the president-elect’s goal of overseeing the largest deportation program in history.