Atlanta (CNN)There were no signs of foul play in the death of a US Centers for Disease Control and Prevention epidemiologist who likely drowned, officials said Thursday. The remains of Timothy Cunningham were discovered Tuesday in the Chattahoochee River in northwest Atlanta, police spokesman Carlos Campos said. Cunningham, 35, was last seen on February 12. The preliminary cause of death is drowning, Fulton County Chief Medical Examiner Dr. Jan Gorniak told reporters. The manner of death has not been determined, she said. Authorities made a positive ID of the remains by using dental records, Gorniak said...