Federal agents say they are targeting the 'worst of the worst' criminals, but some local officials are questioning their aggressive tactics and noting that several detainees appear to have no criminal record.

U.S. Immigration and Customs Enforcement announced that the mass deportation effort in Maine, dubbed "Operation Catch of the Day," officially got underway Tuesday.

Volunteers file rapid legal petitions to free detainees they believe were unlawfully held as ICE relocates individuals from local jails.