A cryptic code sent by the Zodiac killer on November 8, 1969 to San Francisco Chronicle has baffled authorities for decades, until now.

Now a 27-year-old man is claiming he cracked this code as well as the identity of the Zodiac killer, who murdered at least seven people in the late 60s.

Corey Starliper of Tewksbury, Massachusetts, was intrigued by the case after watching a 2007 movie Zodiac about the killings.

He claims to have spent nine hours working on cracking the code. I found it exciting, that I was actually able to get into his head when nobody had for over 40 year, Starliper said to Patch.com.

The code identifies Leigh Allen as the killer, which Starliper says refers to Arthur Leigh Allen.

Allen was a prime suspect at one point in the investigation, but was never arrested. He died at age 58 in 1992.

Robert Graysmith, who wrote a book on the case, maintains that Allen is the killer despite the difference in the handwriting.

He said: Leigh Allen, in that situation, was forcing his handwriting to look different from the way that he normally wrote.

On the other hand, Starliper's claim to have successfully cracked the code has not been received well by San Francisco authorities and Special Investigative Units.

It's disheartening to know that the authorities have basically shut the door on it, he said.

The following is the full text of the 340-character code that Starliper claims to have deciphered:

KILL/SLF/DR/HELP/ME/KILL/MYSELF/GAS/CHAMBER/AEIOUR/DAY
S/QUESTIONSABLE/EVERYY/WAKING/MOMENT/IM/ALIVE/MY/PR
IDE/LOST/I/CANT/GO/ON/LIVING/IN/THIS/WAY/KILLING/PEOPLE/I/
HAV/KILLD/SO/MANY/PEOPLE/CANT/HELP/MYSELF/IM/SO/AN
GRY/I/COULD/DO/MY/THING/IM/ALONE/IN/THIS/WORLD/MY/W
HOLE/LIFE/FUL/O/LIES/IM/UNABLE/TO/STOP/BY/THE/TIME/YOU
/SOLVE/THIS/I/WILL/HAV/KILLD/ELEVEN/PEOPLE/PLEASE/HELP/
ME/STOP/KILLING/PEOPLE/PLEASE/MY/NAME/IS/LEIGH/ALLEN

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