Bruce Arians said Friday that he believes the NFL needs to take a closer look at other teams after two Tampa Bay Buccaneers -- Antonio Brown and Mike Edwards -- and one former player, John Franklin III, were found to have provided fake vaccination cards.

"We've done everything. There's a lot more to that story. I just hope they don't stop looking," said Arians, who said two weeks ago that he had no reason to believe Brown or any player falsified their vaccination status.

An NFL investigation revealed that the three players presented the team with fake vaccination cards, resulting in a three-game suspension. Carrying a fake vaccine card also is considered a federal crime and punishable by up to five years in prison.

When asked if he believes there are other issues throughout the league, he said, "Maybe."