Photo by Michael Putland / Getty Images

Keith Emerson of Emerson, Lake & Palmer has died, as Rolling Stone reports. He was 71 years old. The cause of death is unannounced. The band posted a note to its Facebook confirming the news. "We regret to announce that Keith Emerson died last night at his home in Santa Monica, Los Angeles, aged 71," the note reads. "We ask that the family’s privacy and grief be respected." Update (3/11, 5:24 p.m.)____: According to TMZ, Emerson died of a single gunshot wound to the head. His death is reportedly being investigated as a suicide. Update (3/12, 10:50 a.m.): Santa Monica Police have told Billboard that Emerson's death has been ruled a suicide.

Emerson first came to attention as a member of the Nice, a '60s English prog band. In 1970, he left the band to form Emerson, Lake & Palmer with Greg Lake and Carl Palmer. All three members were accomplished musicians, and the band became known for their meticulously arranged sound as they released prog rock touchstones like 1970's self-titled debut, 1972's Trilogy, and 1973's Brain Salad Surgery.

While they broke up in 1979, the band's members continued to tour in various arrangements over the years. Emerson also released several solo albums and scored movies such as 1980's Inferno and 1984's Murder Rock.

Carl Palmer posted a statement to his website about Emerson's death: