BAGHDAD (Reuters) - Gunmen in army uniforms have seized a senior local official and prominent member of a Sunni Islamist party from his Baghdad home, police and security officials said on Saturday. It was **t clear if Riyadh al-Adhdah, who heads Baghdad's Provincial Council and belongs to the Sunni Islamist Iraqi Islamic Party, had been kidnapped by militiamen, who often wear military outfits, or detained by the authorities