Authorities say one man was fatally stabbed and another wounded in a fight in Sioux City last night. Both men, who were taken to the hospital for treatment. One was released after his treatment. Police have not released his name. The other man was pronounced dead at a hospital. Police identified him as 45-year-old Eleazar Lopez-Martinez. He lived in Sioux City. No arrests or charges have been announced. A caseworker accused of beating a client in northwest Iowa has pleaded not guilty. Court