Death row inmate Fernando Eros Caro died at San Quentin State Prison on Saturday, prison officials said. Caro, 67, was sentenced to death in Santa Clara County Superior Court. He was pronounced dead at 11:45 p.m. Saturday, Lt. Sam Robinson said. The cause of death is pending an autopsy. Caro was sentenced to death for the murders of Jack Lucchesi, Mark Hatcher and Mary Helen Booher and the attempted murder of Rick Donner on Aug. 20, 1980, Robinson said.