>> hello? [speaking non-english language] >> that was really tough. he was talking to his mom for the first time in i don't know. overwhelmed. >> sean: sara carter investigative reporter joining us now. that's pretty heartbreaking. he didn't talk -- i mean, it sounded like there was familiarity they are. seven years old she recognized his voice. he did the trip on his own, caught up with other people going but they are strangers to him, right? >> rights. if so what had happened after