This is the Zodiac speaking

Below is just one of many letters sent to the San Fransisco Police Department by the self-titled Zodiac Killer, a person whose identity is still unknown. This particular taunt was received June 26, 1970. 5 deaths have been officially attributed to the Zodiac Killer whilst the killer claimed to have actually murdered 37 people. The case is still open.

Source

Transcript

This is the Zodiac speaking.

I have become very upset with the people of San Fran Bay Area. They have not complied with my wishes for them to wear some nice (symbol) buttons. I promised to punish them if they did not comply, by anilating a full School Buss. But now school is out for the summer, so I punished them in another way. I shot a man sitting in a parked car with a .38.

(Symbol) -12   SFPD - 0

The Map coupled with this code will tell you where the bomb is set. You have untill next Fall to dig it up.

(Cipher)