Authorities say the missing Machesney Park woman whose body was found in the Rock River near Byron was killed. They're now investigating Katrina Smith's case as a homicide. An autopsy reveals she died of blunt force trauma. Smith was missing for three weeks before her body turned up in the river last Friday. Authorities say anyone with information about the case should call 815-319-6400 or CrimeStoppers at 815-963-7867.