The GBI Crime Lab will perform an autopsy on the body to determine a cause of death. There were no glaring signs of trauma to the body, Sills told reporters.
http://www.ajc.com/news/news/authorities-return-to-lake-where-missing-eatonton-/nfydM/ So I take from this initial visual examination by those on the scene did not see any signs of obvious (glaring is teh word used by Sills) trauma to the body (which includes the head IMO) that could be attributed immediately to assault rather than effects of being in the lake or decomp.
then we have this info from post ME exam
UPDATE: Shirley Dermond, the 87-year-old Eatonton woman whose body was pulled from Lake Oconee Friday afternoon, died of blunt force trauma to the head, Putnam County Sheriff Howard Sills told The Atlanta Journal-Constitution. She did not drown and she was not alive when she was put in the water, he said.
http://www.ajc.com/news/news/authorities-return-to-lake-where-missing-eatonton-/nfydM/
YES! this is what I have been looking for and was unable to view at the time they aired.
sheriff Sills on May 8th regarding Mr. Dermond while Mrs. Dermon was still missing
http://www.wsbtv.com/videos/news/raw-video-putnam-co-sheriff-on-murder-kidnapping/vCZfMx/
on May 16 Sheriff Sills speaks about the body later positively ID'd as Shirley Dermond
https://www.youtube.com/watch?v=s2Y-6UFV_jI
still no luck finding where the sheriff himself says they are searching for a crowbar or crowbar type implement. That is not to say a crowbar is not the item they seek as the murder weapon, just that I was really wanting to find video of the sheriff stating that and was unable.
If someone comes across such a video or a direct quote regarding a crowbar from Sheriff Sill could you please let me know? please and thanks.