A comforter found in a storage unit rented by Josh Powell has tested positive for blood, police revealed on Friday.
Pierce County, Washington detectives reported finding a gray-blue-pink comforter with a stain during the search of the unit.
As RadarOnline.com has been reporting, Powell killed himself and his two young sons in a gas-fueled inferno last Sunday. Pierce County authorities consider the murder-suicide an admission that he killed his wife Susan two years earlier.
Susan Powell went missing in December, 2009, and her husband always insisted she'd gone off on her own accord after he'd left in the middle of the night for a camping trip with their two young sons.
Her body has never been found.