Bates ' slaying has been linked to the Zodiac killer murders , which occurred in northern California in the late 1960s .
She was a graduate of Ramona High School , formerly a varsity cheerleader , and an honor student there .
graduate ' slaying has been linked to the Zodiac killer murders , which occurred in northern California in the late 1960s .
She was a graduate of Ramona High School , formerly a varsity cheerleader , and an honor student there .