The NFL on Thursday suspended three players for at least a full season and another for six games in the latest batch of punishments for violations of the league's gambling policy.

Indianapolis Colts cornerback Isaiah Rodgers and defensive end Rashod Berry, along with free agent defensive tackle Demetrius Taylor, are all indefinitely suspended and must sit out at least the 2023 season before seeking reinstatement. All three were found to have placed wagers on NFL games last season, the league said in a statement.

Tennessee Titans offensive tackle Nicholas Petit-Frere also was suspended for six games for placing bets at the team's facility on non-NFL games.

The Colts announced later on Thursday that they had waived both Rodgers and Berry.

"We have made the following roster moves as a consequence of the determination that these players violated the league's gambling policy," Colts general manager Chris Ballard said in a release. "The integrity of the game is of the utmost importance. As an organization we will continue to educate our players, coaches, and staff on the policies in place and the significant consequences that may occur with violations."

ESPN reported that an online sportsbook account used by Rodgers placed more than 100 bets, including at least one wager involving the Colts.

On June 5, the Colts confirmed in a statement that they were aware of an investigation into an unnamed player and would have no further comment. Rodgers posted a statement on Twitter later that day, saying he took "full responsibility" for his actions.

"I know I have made mistakes and I am willing to do whatever it takes to repair the situation," Rodgers wrote. "The last thing I ever wanted to do was to be a distraction to the Colts organization, my coaches, and my teammates. I've let people down that I care about.

"I made an error in judgment and I am going to work hard to make sure that those mistakes are rectified through this process. It's an honor to play in the NFL and I have never taken that lightly. I am very sorry for all of this."

In a statement to ESPN, Petit-Frere apologized to "my family, coaches, teammates and the Titans fans."

"I have always strived in every stage of my life to follow the rules," he said. "I did not knowingly break the rules. Even after attending a league presentation, I was unaware about the specifics around placing bets from a team facility."

Earlier this offseason, five players were suspended for running afoul of the league's gambling policies. On April 21, the league issued indefinite suspensions lasting through at least the 2023 season to three players who were found to have bet on NFL games: wide receiver Quintez Cephus and safety C.J. Moore of the Detroit Lions and defensive end Shaka Toney of the Washington Commanders. Lions wide receivers Jameson Williams and Stanley Berryhill were also banned for six games for sports bets not involving NFL teams. Cephus, Moore and Berryhill were later released by the Lions.

Wide receiver Calvin Ridley, a 2018 first-round pick of the Atlanta Falcons who recorded 90 catches and 1,374 receiving yards in 2020, was suspended all of last season for gambling on NFL games. He was dealt to the Jacksonville Jaguars at last year's trade deadline, and the league officially reinstated him in March.

Rodgers, 25, first made a name for himself as a sixth-round pick with his work as a kick returner. After starting nine games last year, he was expected to play a key role in the Indianapolis secondary following the team's decision to trade top cornerback Stephon Gilmore to the Dallas Cowboys. Now, first-year coach Shane Steichen and defensive coordinator Gus Bradley might have to count on second-round rookie Julius Brents to hold down a starting role on the outside.

Petit-Frere started all 16 games for the Titans last season as a third-round rookie out of Ohio State, and he had been set to hold down the right tackle spot again this year.

What is NFL's gambling policy?

In June, the league began an effort to re-emphasize its gambling policy as it pertained to players. The six "key rules" that officials the NFL outlined were:

1. Don't bet on the NFL;

2. Don't gamble at your team facility, while traveling for a road game or staying at a team hotel;

3. Don't have someone bet for you;

4. Don't share team "inside information";

5. Don't enter a sportsbook during the NFL playing season;

6. Don't play daily fantasy football.

"It comes back to, in large part, a couple of rules that have existed as long as anybody can remember," Jeff Miller, NFL executive vice president of communications, public affairs and policy said in a conference call with reporters last week. "Don't bet on the NFL. That's not new because sports gambling is more available. That's always been the case. And don't bet when you're at work, wherever work happens to be in that moment. That's existed for a long time."

Follow USA TODAY Sports' Michael Middlehurst-Schwartz on Twitter @MikeMSchwartz.

This article originally appeared on USA TODAY: NFL suspensions for gambling: 3 more players banned for 2023 season