LOS ANGELES (AP) The man authorities say was the most prolific serial killer in U.S. history, with nearly 60 confirmed victims, died Wednesday in California. He was 80.

Samuel Little, who had diabetes, heart trouble and other ailments, died at a California hospital, according to the state Department of Corrections and Rehabilitation. He was serving a life sentence for multiple counts of murder.

California corrections department spokeswoman Vicky Waters said there was no sign of foul play, and his cause of death will be determined by a coroner.