This 1985 file photo shows Richard Ramirez, center, know as the Night Stalker shows a pentagram on the palm of his hand in court. California corrections officials say convicted serial killer Ramirez, known as the Night Stalker, has died in prison. San Quentin State Prison spokesman Lt. Sam Robinson says Ramirez died Friday, June 7, 2013. The man on the right is unidentified. (AP Photo,File) by Don Thompson Associated Press WriterLOS ANGELES (AP) — Richard Ramirez, the demonic serial killer known as the Night Stalker who left satanic signs at murder scenes and mutilated victims’ bodies during a reign of terror in the 1980s, died early Friday in a hospital, a prison official said.