The NFL failed to discipline Ray Rice properly because of a weak domestic abuse policy and an investigative system too reliant on information from law enforcement, according to a report released on Thursday.

The report from a former FBI director hired to investigate found no evidence the league saw in advance - or covered up - a video of the Ravens running back knocking out his fiancee in a casino elevator.

It confirmed what the NFL and many fans long ago concluded: The initial two-game suspension was insufficient because the league's immediate investigation was superficial.