A hoax at an area post office leads to charges against a Southeast Kansas woman. The U.S. post office in Pittsburg was evacuated early yesterday morning due to a bomb threat. Postal inspectors say Rita Jo Bates, an 18-year veteran with the postal service has been charged with making a false bomb threat. Inspectors say Bates has spent the last 16-years in the Pittsburg office as a clerk. She allegedly made the threat to get a day off work. She`ll be back in federal court in Wichita on Wednesday.