It wasn't the same charge. Murder is a criminal charge punishable by imprisonment, and civil proceedings aren't prosecuted by the state. The burden of proof in civil court is based on probabilities, not guilt beyond a reasonable doubt. Because he had money, it's possible it could have been made a civil matter even if the results of the criminal trial had been different. It was an over sensationalized media hype fiasco which the police ruined on their own by blatantly planting evidence, and none of those people are reason enough to grant the state authority to repeatedly harass citizens with criminal charges.