Two Gitmo men back in al-Qaeda,says Pentagon

The official spoke on condition of anonymity because he was not authorized to disclose that fact on the record. Another two or three Saudis who had been transferred from Guantanamo cannot be located by the Saudi government,said Christopher Boucek,a researcher at the Carnegie Endowment for International Peace.

Navy Cmdr Jeffrey Gordon,a Pentagon spokesman,said The best you can do is work with partner nations to ensure that they take the steps to mitigate the threat ex-detainees pose. Theres a risk in all detainee transfers and releases from Guantanamo.

The two men who went through the Saudi rehabilitation program and resurfaced in Yemen were seen in video clips posted on the Internet last week.