NEW : Agents were using a three-tiered method , including an X-ray machine , radiological detection equipment and bomb-sniffing canine teams , he said . The investigation is ongoing , ICE spokeswoman says . NEW : The men have not yet been processed for removal from the U.S. , ICE says . NEW : one of the unidentified men are from U.S. and Five from U.S. . The men were found during a security exercise outside a cargo facility .
NEW : The investigation is ongoing , ICE spokeswoman says . NEW : The men have not yet been processed for removal from the U.S. , ICE says . NEW : one of the unidentified men are from U.S. and Five from U.S. . The men were found during a security exercise outside a cargo facility .