I-5 Strangler Killed in Prison State Prison officials are investigating the death of Roger Kibbe, 81, as a homicide Brenna Ehrlich, provided by FacebookTwitterEmail The serial killer and rapist known as the I-5 Strangler was found dead in his prison cell on February 28th. Mule Creek State Prison officials are investigating the death of Roger Kibbe, 81, as a homicide. A correctional officer found Kibbe’s unresponsive body during an early-morning population check, his cellmate — Jason Budrow, 40 — standing nearby. A release from the California prison does not list the cause of death or if Budrow is a suspect. More from Rolling Stone