The FBI have confirmed an applied mathematician and two cryptologists have cracked the code.
The Zodiac killer operated in the 1960s-1970s with five confirmed murders although the number of murders could be as high as 28.
The killer left taunting letters and cards including four cryptograms.
After 51 years, citizens have solved the Zodiac Killer's cipher that has stumped law enforcement - CNN
The Zodiac killer operated in the 1960s-1970s with five confirmed murders although the number of murders could be as high as 28.
The killer left taunting letters and cards including four cryptograms.
After 51 years, citizens have solved the Zodiac Killer's cipher that has stumped law enforcement - CNN