The NFL Players Association is investigating a complaint by New York Jets players about the presence of security cameras in the locker room of their training center in Florham Park, New Jersey, a source close to the union confirmed to ESPN.

The NFLPA will consider taking action if the cameras are found to violate the collective bargaining agreement, the source said.

According to the New York Daily News, the players complained that they were not aware of the cameras and considered them an invasion of privacy. The NFLPA contacted the NFL, which “responded directly to the NFLPA’s inquiry,” a league spokesman said.

The NFL believes the Jets have not violated any rules and that no further action is needed, a source said.

The Jets moved into their current facility in 2008. The cameras were installed at that time and are used for security purposes only, sources said. The footage, continuously held for 30 days, is reviewed only by members of the security department and only as needed, that is, in response to a reported theft or unauthorized access.

There have been cases of gamers asking the security department for help when they suspect valuables are missing, the sources said.

The Jets say they haven’t violated the CBA or any New Jersey laws, the sources said, and that the players are aware of the cameras.

ESPN contacted four former players who played at various points during the past 12 years at the current facility. Two said they had no idea there were cameras in the locker room. Two said they were aware of the cameras only because security investigated incidents involving lost valuables.

As for a possible violation of the CBA, both the Jets and the NFL maintain that the cameras comply with the rules because they fall under the management rights of a club, the sources said.

Other teams likely have cameras in their locker rooms. As ProFootballTalk noted, in 2002 security cameras captured New Orleans Saints wide receiver Albert Connell pulling money from a teammate’s locker.