The infant was originally brought to Harborview by ambulance from Bothell on the evening of May 29. Medical personnel there examined the little girl and reported that her injuries apparently were caused by an assault.
Child Protective Services then contacted Bothell police and an investigation was launched. "We've had a team of investigators working this case since we were notified," said Sgt. Ken Seuberlich of the Bothell police.
The infant was later moved to Children's Hospital pediatric intensive care unit for additional treatment and is now in protective custody, Seuberlich said.
He said police want to speak with anyone who had contact with the little girl.
"Anybody who had contact with that infant prior to May 29 is a person of interest to us, and we're going to be reaching out to speak with the people who had contact with that infant," he said.
He said the infant had been living with her biological parents before she was brought to Harborview.
It was not immediately clear why police waited two weeks to make the investigation public.