Authorities say blood discovered at a campsite where three young Washington state sisters were found dead last week belonged to a male.

Travis Decker, the former Army soldier who's wanted for the murder of his three young daughters in Washington state, allegedly searched the internet about how to move to Canada in the days before his daughters' deaths.

The sheriff's office leading the search, which has covered hundreds of square miles, said it has reached the point “where we need to rest our local resources.”