GRIMES, Iowa (AP) — The Polk County Sheriff’s Office says a more than month-long investigation has shown that a woman found dead inside her house near Grimes died of natural causes. The sheriff’s office made the pronouncement in news release Wednesday on the death of 35-year-old Melanie Scheuring. Scheuring was found dead in her house on April 19 after deputies, firefighters and medics were called to the home. Scheuring’s 46-year-old fiance was also at the home. Other than to declare her death was from natural causes, officials did not say Wednesday what caused Scheuring’s death.