OMAHA -- At least two people are dead and ten others are hospitalized, while another 19 have been accounted for after an explosion and building collapse at an animal feed processing plant in south-central Omaha. According sources in Omaha close to KFOR News, Douglas County Attorney Don Kleine says there are two confirmed deaths, but others have not yet been accounted for. The blast happened at International Nutrition near 77th and "I" Streets in south-central Omaha. Interim Omaha Fire Chief Bernie Kanger says they haven't cleared the building yet, in terms of finishing their search for anyone inside. Of the 10 injured, four are in critical condition, while two are at the St. Elizabeth burn unit in Lincoln. Nebraska's Task Force One from Lincoln is helping with the search and recovery. The cause of the blast has not yet been determined, but Kanger says there were no hazardous chemicals at the plant.