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The Associated Press
In this photo taken on Wednesday Dec. 21, 2011, anti-Syrian regime protesters, some wearing Syrian revolution flags, gather during a night demonstration in the Baba Amr area, in Homs province, Syria. Arab League monitors kicked off their one month mission in Syria with a visit on Tuesday, Dec. 27, 2011 to Homs, the first time Syria has allowed outside monitors to the city at the heart of the anti-government uprising. Several from the team of 12 stayed in the city overnight, and the team continued to work in Homs on Wednesday. The monitors are expected to visit Hama, Idlib and Daraa on Thursday, Dec. 29, all centers of the uprising. The large Arabic banner hanging to the right reads, "all the doors closed, except your door God." (AP Photo)

BEIRUT — Syrian opposition activists are criticizing the Sudanese head of the Arab League monitoring mission to Syria for serving as a senior official with the "oppressive regime" of President Omar al-Bashir, who is under an international arrest warrant on charges of committing genocide in Darfur.

Lt. Gen. Mohamed Ahmed Mustafa al-Dabi, is a longtime loyalist of al-Bashir and once served as his head of Sudanese military intelligence.

Amnesty International said under al-Dabi's command, military intelligence in the early 1990s "was responsible for the arbitrary arrest and detention, enforced disappearance, and torture or other ill-treatment of numerous people in Sudan."