On April 20 the Zodiac sent a letter to the Chronicle including a 13-character cipher, a diagram of a bomb he planned to use on a school bus, and a statement that he was not responsible for the February 18, 1970, bombing of a police station in San Francisco. He ended the letter with a score "[Zodiac Symbol]=10, SFPD=0."
Authorities interpreted the number 10 as a body count.
The next letter, which came to the Chronicle on April 28, read, "I hope you enjoy yourselves when I have my BLAST," along with the cross-circle symbol.
On the back of the card, the writer threatened to use his bus bomb if the Chronicle failed to publish the April 20 letter that he had sent detailing his plans to blow up a school bus.
He also requested that people begin wearing Zodiac buttons.
In June a letter received at the Chronicle contained another 32-letter cipher. The author said he was upset that he had not seen people wearing Zodiac buttons.
He took credit for another shooting but gave no specifics. Investigators suspected it was the shooting death of Sgt. Richard Radetich a week earlier.
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Zodiac killer
NonfiksiThis book is about the Zodiac Killer this information is not mine but I will be putting some of it into my own words, I am making this book for my serial killer fans or actaul serial killers but anyways. I enjoyed hearing about the Zodiac Killer's...
