Ryan O'Neal's son says dad broke Farrah's arm in a fight

London, Oct 10 (ANI): Actor Ryan O'Neal's son Griffin has accused his dad on cheating on late partner Farrah Fawcett, and breaking her arm in a rage.

Griffin insists that O'Neal only stood by his on/off girlfriend as she battled cancer to make sure she didn't leave him out of her will.

"I believe my dad's only goal was to make sure he'd be in Farrah's will," the Daily Express quoted him as telling the Globe.

"My father cheated and lied and was abusive to Farrah. She did not deserve that... He was an infidel," he added.

Griffin has come forward with claims his "violent" dad, who allegedly knocked out his son's two from teeth in a fight, once broke Fawcett's arm in a 1983 row.

Griffin adds, "My dad went into a rant. Farrah came flying at him to defend herself, he blocked her and, in the process, broke her arm.

"They spun the truth to protect Ryan (but) I was there, I saw it happen." (ANI)