Sheriff's detectives in Grant County, Wash., are investigating the death of a woman in her 20s found dead in a home north of Moses Lake.

The sheriff's office says a person who came to visit the woman Tuesday found her dead and called for deputies.

While there are no obvious signs of foul play, detectives opened an investigation based on the woman's age and uncertainty about what caused her death.

The woman was not immediately identified. The Grant County coroner plans an autopsy Wednesday.