ALBANY, N.Y. -- The "Son of Sam" serial killer who terrorized New York City 40 years ago is in the hospital. New York state prison officials said Tuesday that 64-year-old David Berkowitz was transferred to a hospital from the upstate maximum-security prison where he is serving a life sentence. Officials would not comment on why he was in the hospital, but the New York Post and the Times-Union of Albany reported that he was transferred to undergo heart surgery.