Feds ID 400 migrants smuggled into US by ISIS-affiliated network —with the whereabouts of 50 unknown

The Department of Homeland Security has identified over 400 migrants who were brought to the US from Central Asia and other places by an ISIS-affiliated human smuggling network — and the whereabouts of more than 50 of them are unknown, according to an unsettling report.

More than 150 of the migrants have been arrested, but the locations of another 50 remain unknown, three US officials told NBC News, adding that US Immigration and Customs Enforcement is looking to arrest those involved on immigration charges.