A Los Angeles coroner's official says the death of Keith Emerson, keyboardist and co-founder of the seminal progressive rock group Emerson, Lake, and Palmer, has been ruled a suicide. The determination was made after an autopsy showed Emerson shot himself in the head, the official tells the AP. He says there were also signs the 71-year-old had a heart condition. Emerson's body was found early Friday by his longtime partner. Authorities suspected Emerson shot himself, but the determination did not become official until after the autopsy. (More rock music stories.)