California's 'I-5 Strangler' Roger Kibbe was strangled to death, autopsy shows. A convicted California serial killer who was accused of strangling and raping at least seven women faced a similar fate earlier this week, with an autopsy determining he was fatally choked at a state prison. Roger Reece Kibbe, who was known as the "I-5 Strangler" in the 1970s and '80s, was spotted unresponsive Sunday in his cell at Mule Creek State Prison southeast of Sacramento, with his 40-year-old cellmate standing nearby. An autopsy determined the 81-year-old had been manually strangled in what authorities have classified as a homicide, the Amador County Sheriff’s Office announced Wednesday. No charges have been filed in connection with his death. Check out the link to read the full story.