The man found unconscious in a house with the dismembered body of a Putnam County elementary school teacher 10 days ago was indicted Friday on a charge of first-degree murder.

It took days to positively identify 48-year-old Jan Keller after the Aug. 24 discovery of her body in a St. Johns County home. Investigators said they found body parts in several bags underground in an undeveloped area of the Samara Lakes subdivision.

Investigators said Timothy Rose, Keller's boyfriend, tried to kill himself before deputies forced entry into the home where the two lived. Authorities said they found him unconscious lying next to an empty pill bottle and a shotgun.

"It certainly appears to us that Rose, after his dismemberment, took some of those body parts, went and buried them, came back for the rest of the body, and that's when we showed up just to check again because we had a bad feeling from an earlier conversation (with Rose)," St. Johns County Sheriff David Shoar said earlier this week.

Once Rose recovered at a hospital, he was arrested on an open murder charge. The grand jury's indictment on a charge of first-degree murder would make him eligible for the death penalty, and he was taken to a hospital and later arrested.

When investigators questioned Rose, they said he alluded to certain aspects of the killing, but was uncooperative and "extremely evasive" in assisting detectives in locating Keller's dismembered parts.

Keller was reported missing after she failed to report to work Monday at a Putnam County elementary school.

Detectives said they still don't know a motive for the slaying.