Legendary boxer Mike Tyson filed an embezzlement lawsuit against a financial services firm owned by concert promoter Live Nation Entertainment on Wednesday.

Tyson claimed that an advisor for SFX Financial Advisory Management Enterprises embezzled over $300,000 from him and his wife Lakiha, according to The Associated Press.

The 45-year-old former heavyweight champ signed with SFX in 2005 and was assigned financial adviser Brian Ourand to help the Tyson family, according to the lawsuit filing obtained by E! News.

Tyson's lawsuit stated that the financial company never gave him and his wife a full account of the losses the couple took while with the firm.

SFX eventually reassigned Ourand off the Tyson's case which prompted the boxer to investigate.

Live Nation did not inform them of the alleged theft until Tyson inquired into the whereabouts of Ourand. The company responded first by giving back a portion of the money that was taken but wanted the Tyson's to sign a non-disclosure agreement.

The boxer denied to sign the agreement and instead followed up with the current lawsuit which cited the theft from Ourand. The lawsuit stated that the actions of the firm cost him millions more in additional lost earnings as Tyson had to hire new advisers and turn down lucrative contracts.

Tyson seeks over $5 million in damages for charges that include breach of fiduciary duty, negligent hiring, and SFX's unjust enrichment with Live Nation.

Live Nation has yet to respond to the lawsuit and the allegations, according to Yahoo News.

Tyson is currently on the road with his one man show "Undisputed Truth."

The autobiographical show was first performed last April in Las Vegas at the MGM Grand's Hollywood Theatre and later continued with a short run on Broadway, which was directed by Spike Lee.

 The boxer has turned to acting within recent years with a cameo in "The Hangover" films and an appearance on the latest season of "Law and Order: Special Victims Unit," according to The Washington Post.