No charges will be filed in the stabbing death of a Los Angeles Dodgers fan killed in September after a game against the Giants in San Francisco.

Jonathan Denver was stabbed to death outside AT&T Park. The 24-year-old was punched and hit over the head with an aluminum chair during an altercation with 21-year-old Michael Montgomery and his brother.

Montgomery was arrested but released several days later after prosecution declared it needed more information before filing charges.

Prosecutors say it cannot be proved that Montgomery did not act in self defense.