Sgt. Cindi West of the King County Sheriff's Office said the death is considered suspicious.
India Castle, 27, of Vashon Island was reported missing by her family at about 8 p.m. Friday. An overnight search of the area yielded no results, so a search-and-rescue team was sent out Saturday morning to try and find her, West said.
At about 1 p.m. Saturday, the team found a woman's body in a wooded area not far from Castle's home. West said officials believe it is Castle, but the King County Medical Examiner needs to confirm her identity.
West said the woman's death is considered suspicious due to her young age, but a cause of death will not be known until an autopsy is performed.