California police chief's 1969 letter suspected Zodiac killer link to Cheri Jo Bates murder, group says

The police chief of a Southern California city at the time a young woman was murdered in 1966 said the killing could have been related to the Zodiac Killer murders that occurred hundreds of miles away, despite the department's current stance that the slayings are not related, according to a group who recently claimed to have unmasked the notorious murderer.