John Conyers III, a Detroit hedge fund manager named as a possible successor to his scandal-rocked father, Rep. John Conyers, was arrested in Los Angeles this year on suspicion of domestic violence, but prosecutors declined to charge him, according to documents obtained by NBC News.

The Los Angeles County District Attorney’s Office cited a “lack of independent witnesses” and their conclusion that it “could not be proven beyond a reasonable doubt that the victim’s injury was not accidentally sustained” while he was disarming her, according to case paperwork.

In addition, prosecutors said the victim had no visible injuries beyond a small stab wound to her lower bicep and no other independent witnesses to what she described as earlier pushing and shoving by Conyers III.