Police say an eighth victim has died from the attacks at a Georgia mobile home.
Glynn County Police Chief Matt Doering on Sunday identified the victim as 19-year-old Michael Toler. He was one of two people critically injured in the attacks in Brunswick along the Georgia coast. A ninth is hospitalized.
Doering says Toler died at a hospital in Savannah.
Doering also announced a $25,000 reward for information that leads to an arrest and conviction of anyone responsible for the killings. He says police have no suspects, adding: "We need help."
Doering has said the killer wasn't among the dead or injured. The bodies were found Saturday.
A man who reported the bodies is in custody, accused of lying to police and other charges.