The NFL Players Association was aware of the video and audio files of former New Orleans Saints defensive coordinator Gregg Williams telling players to try and injure members of the San Francisco 49ers before the tapes were released to the public.
The NFLPA said it was given details of the recordings by Scott Fujita, a former member of the Saints and now on the union's executive committee, prior to the public release on April 4.
"We learned of the tape as part of our effort to obtain any and all information related to an alleged pay-to-injure scheme," NFLPA assistant executive director George Atallah said in a statement. "We had no control of the content and did not make a determination on the method of its release. To date, the NFL has not provided the NFLPA with detailed evidence of the existence of such a program."
Fujita was one of the players named in the bounty program in which Saints players were paid for causing injury to opposing players.