The Federal Bureau of Investigation said Friday that it found bones during a search operation in Washington state amid the manhunt for Travis Decker , the father accused of killing his three daughters before disappearing into the wilderness.

The FBI said on Monday that it was conducting a two-day grid search near Rock Island Campground in Leavenworth, Washington, an area that has extremely heavy vegetation. Nearly 100 personnel members, including specialty search teams, took part in the search, the agency said.

In an email Friday evening, FBI spokesperson Ted Halla confirmed to CBS News that some bones were collected earlier this week "around the Rock Island Campground."

Halla said the bones were being analyzed to determine if they are human or animal.

FBI Seattle Special Agen

See Full Page