Former undisputed heavyweight world champion Mike Tyson will not be criminally charged after bloodying a man who was annoying him on an April JetBlue flight.

The case against Tyson, 55, was dropped due to "the conduct of the victim leading up to the incident, the interaction between Mr. Tyson and the victim, as well as the requests of both the victim and Mr. Tyson," San Mateo County District Attorney Stephen Wagstaffe said Tuesday.

The beating handed down by Tyson took place on April 20.

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The former champion was first cordial with 36-year-old Melvin Townsend III on a flight headed from San Francisco International Airport to Florida, and he even took a selfie with the fan.

However, Tyson appeared to become more and more agitated as Townsend continued to pester him.

The 36-year-old did not stop when Tyson asked, and the man who many consider the greatest boxer of all time let loose a flurry of punches on Townsend, footage shows.

Tyson's legal team reacted to Tuesday's news with gratitude.

The lawyers thanked the authorities "for their careful, diligent, and professional work."

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Townsend reportedly refused to cooperate with investigators, authorities said.