Bones discovered during latest manhunt for Travis Decker, who is wanted in daughters' murders

While initial assessments could not confirm whether the bones were human, the items were sent for forensic testing to Central Washington University's anthropology department to determine if they may be linked to the search for Decker, Fox 13 reported. 

If the evidence warrants further investigation, law enforcement will respond accordingly, Chelan County Sheriff Mike Morrison told the station. At this time, there is no conclusive information about whether Decker is alive or dead. 

"We recognize that the potential is it's not going to be a full skeleton," Morrison said. "If we were to find one, there's going to be bits and pieces, because wildlife does spread remains around."

So far, authorities have searched 247 acres in three major sweeps, Fox 13 reported.

Morrison told the station that additional campground and trail closures are likely as investigators continue to expand their search efforts. 

FBI Seattle and the Chelan County Sheriff's Office did not immediately respond to a request for comment from Fox News Digital.