Tyson and Ebben were at the command post when state troopers alerted them to a suspicious discovery at the quarry south of Avery's property. "The state patrol officers indicated they found, what they believed to be, a human vertebrae in the water," Tyson stated. Other troopers alerted Tyson to a possible burned human foot. Tyson took the charred object into custody, concluding it was burnt insulation. While at the quarry, Tyson photographed a red-stained rag that was taken into evidence. "Upon walking away from that object, I did locate, what appeared to be, fresh blood in the gravel," Tyson stated. Tyson took more pictures of the blood and he collected a swab of the stain. His report did not address what became of the suspected human vertebrae in the water. The state crime lab was not brought in to process the quarry site that day. Later, Culhane analyzed the stain, confirming it "indicated the presence of blood," Culhane wrote. The DNA tests indicated the quarry blood did not belong to Steven Avery, reports show. It came from an unknown male.