NEWARK, N.J. (AP) — The NFL plans to take what investigators learn in the aftermath of the Boston Marathon bombing and incorporate it into its security plans for the cold-weather Super Bowl at MetLife Stadium.

The league said Tuesday that it has raised its security levels for all its games and events since the Sept. 11 terrorist attacks in 2001. For the past two years, it been working closely with federal, state and municipal agencies developing a comprehensive security plan for the Super Bowl, which will be played in the shadow of New York City.

"We do not comment on specifics of these programs but continue to review and evolve our plans to ensure the safety of everyone attending the Super Bowl," the league said in a statement.