The office made the announcement in a news release Friday.

After more than seven weeks of study, the manner of the Tillicum girl's death, whether accidental, natural or homicide, also was undetermined.

So the girl's death certificate will say: Skeletal remains: Insufficient information to determine the cause of death.

Adre'anna disappeared the morning of December 2nd. Her parents have told Lakewood police they last saw her about 7:45 a.m. as she headed toward Tillicum Elementary School to see if there were classes despite the snow.

She didn't make to the school and vanished. Two boys found her remains on April 4th in a blackberry-choked lot in Woodbrook, about two miles and on the other side of Interstate 5 from her home.

Lakewood police have said they have no identified suspects in Adre'anna's death.