"No, we haven't heard of anything being found," Thurston Co. sheriff's Lt. Chris Mealy said Friday night.
Thurston County had a boat in the water Friday looking for Shantina "Kat" Smiley, 29, of Silverdale. She and her 8-year-old son, Azriel Carver, were last seen Saturday night, and her partially submerged minivan was found Sunday on a remote south Puget Sound beach.
Azriel's body was discovered by a walker Thursday on Fox Island, southwest of Tacoma and about 18 miles north by water from where the van was found.
Pierce County sheriff's spokesman Ed Troyer said Friday afternoon that a search plane was sent up to look for Smiley in the general area where her son's body was found.
An autopsy Friday by Dr. Sigmund Menchel, Pierce County's acting chief medical examiner, positively identified the boy, determined he had drowned and his death was an accident.
Thurston County authorities have led the search since the van was found in their jurisdiction, but Pierce County became involved once the boy's body was found in that county.
Mealy said his office planned no searches this weekend.
A wallet containing Smiley's driver's license, some cash and credit cards was found in the van. Two mismatched shoes, a partially full and corked wine bottle, an inhaler and an orange ball have washed ashore since, and Mealy said the items apparently belonged to the boy or his mother.
There was no indication that a crime took place inside Smiley's 2005 Dodge Caravan, Mealy said.
Smiley was heading from her home in Silverdale to her stepfather's house in southwest Washington when she and her son vanished. Silverdale is about 16 miles west of Seattle, across Puget Sound.