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you need to leave town." no one could no where i was at. only my family knew where i was at. >> reporter: with kristene in a safe place, veuleman went straight to layton, utah. with the help of the local pd, he was soon sitting across from his new person of interest. >> christobal melchor said that he was on a training exercise in fort hunter liggett, california, at the time of the murder. >> not only was he not in texas, he was on the other side of the country. >> he was. >> was there anything to suggest that he had some kind of vendetta against the chapa family? >> we were not able to find any connection between christobal melchor and the chapa family or the olgin family. >> reporter: veuleman then showed melchor the letter, and melchor was stunned. >> but he was even more surprised when he saw his picture on the last page of the letter. >> reporter: that was because melchor immediately recognized the photo. he knew when and where it was taken. plus, he said, the original