NEW : Aid group says it received information indicating that aid workers are dead . Cyd NATO and her driver were abducted in Kandahar province on 50 . Roadside bomb kills three South Korean soldiers in the Mizell -led force , injures another .
NEW : Aid group says it received information indicating that aid workers are dead . Cyd Mizell and her driver were abducted in Kandahar province on January 26 . Roadside bomb kills two Polish soldiers in the NATO-led force , injures another .