The NFL has said it is investigating allegations of player conduct during the national anthem, and said it was “disappointed” with the players who chose to take a knee during the anthem.

The league said Thursday that the league’s independent review team is looking into the matter and that any discipline will be decided by the NFLPA.

The players who took a knee have said they felt compelled to do so, with some saying they are doing so because of racial injustice and inequality.

NFL commissioner Roger Goodell said Thursday in a statement that he has received “concrete reports” from the league office and from the NFL Players Association regarding the matter.

“I want to take this opportunity to express my deep disappointment that the players took a moment to do what is right and honorable for their country and that they are acting in accordance with the spirit of their oath,” Goodell said.

In the statement, the NFL said it has reached out to the union, and that it was not in the position to comment further until the review is complete. “

We want to continue to work together to achieve lasting change in the lives of our country and to promote fairness, equality and opportunity for all Americans.”

In the statement, the NFL said it has reached out to the union, and that it was not in the position to comment further until the review is complete.

The anthem protests have been growing in recent weeks.

At the end of the season, the league announced that it would honor retired players who have died in service to the United States.

In response, a number of players have refused to stand for the anthem, including some of the most popular players in the NFL history, including former San Francisco 49ers quarterback Colin Kaepernick, who has said he will not stand during the playing of the anthem unless he is able to kneel for the national anthems.