 legally crossed the border and were released into the U.S. by Border Patrol because there was no information suggesting terror ties at the time. Now, their whereabouts are unknown as immigration agents look to arrest them. U.S. officials tell us, saying they're among a group of over 400 migrants DHS identified in the U.S. from Tajikistan, Uzbekistan, Moldova, Kyrgyzstan, Georgia, and Russia as subjects of concern because they were brought to the U.S. by an ISIS-affiliated smuggling network.