Authorities are investigating the death of a 16-year-old girl found inside her apartment in the 200 block of Alaskan Way South, Seattle police reported Tuesday.
There were no signs of struggle or foul play but the King County Medical Examiner's Office has yet to determine how the girl died.
On Monday, the girl's father called police about 11:15 a.m. to the apartment, where the girl lived with her mother. The father had been unable to reach his daughter and went to check on her. He found her unconscious on a bedroom floor, police spokeswoman Renee Witt said.
Medics pronounced her dead at the scene, Witt said.
Homicide detectives were called to investigate, which is required any time there is a death involving someone under the age of 18, Witt said.