United Auto Workers President Owen Bieber is fasting to call attention to black detainees held in South African prisons without charge. Bieber, who started fasting Friday in Detroit, said he would begin eating again after two days. Another UAW official will begin fasting after Bieber ends his fast, and the two-day fasts will continue until the detainees are released or until the union holds its convention in June, the union said. In South Africa, large-scale hunger strikes among blacks detained without charge began three weeks ago. On Friday, the white minority government said most had stopped their protest after assurances that a "substantial" number of detainees would be freed. But lawyers for at least 100 detainees said Saturday that their imprisoned clients' fasts were continuing.