One of the House Democrats who announced an investigation into the NFL’s handling of allegations of workplace misconduct involving the Washington Football Team said Friday he’s eager to learn how the probe was conducted and why so little was revealed.

Rep. Raja Krishnamoorthi, D-Ill., co-signed a letter to NFL Commissioner Roger Goodell earlier in the week seeking information on the NFL’s investigation. He told ESPN that the vulgar emails between Jon Gruden and former Washington executive Bruce Allen may be the "tip of the iceberg."

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Representative Raja Krishnamoorthi, a Democrat from Illinois, questions witnesses during a House Intelligence Committee impeachment inquiry hearing in Washington, D.C., U.S., on Tuesday, Nov. 19, 2019. The committee plans to hear from eight witnesses in open hearings this week in the impeachment inquiry into President Donald Trump. (Jacquelyn Martin/AP Photo/Bloomberg via Getty Images)

"The way they handle issues of race and gender, and the way they treat their employees really influences the way society handles those very issues," Krishnamoorthi told the outlet. "We're very much interested in learning more about exactly why the NFL did what they did and the way they did it."

Krishnamoorthi fears that the shocking way Gruden communicated in his emails with Allen and other high-profile businessmen may be commonplace in the NFL.

"The biggest fear is that what Jon Gruden appears to engage in is much more common than what we otherwise thought. That's what a lot of people are concerned about," the congressman said.

In emails reported by several outlets, Gruden made homophobic, racist and other vulgar remarks in conversations with Allen while Gruden was an employee of ESPN. Gruden resigned as coach of the Las Vegas Raiders amid the controversy.

HOUSE OVERSIGHT DEMS HIT NFL OVER 'LACK OF TRANSPARENCY' IN WASHINGTON HANDLING, LAUNCH PROBE

Head coach Jon Gruden of the Las Vegas Raiders talks with quarterback Derek Carr #4 during their game against the Miami Dolphins at Allegiant Stadium on September 26, 2021 in Las Vegas, Nevada. The Raiders defeated the Dolphins 31-28 in overtime.  (Photo by Ethan Miller/Getty Images)

Krishnamoorthi and Rep. Carolyn B. Maloney, D-N.Y., expressed "serious concerns" about alleged "widespread abusive workplace conduct" within the Washington team organization in a letter to Goodell. 

The congressional leaders announced an investigation into the NFL’s handling of the matter and requested documents and information regarding the league’s probe into allegations of a toxic workplace environment.

"The NFL has one of the most prominent platforms in America, and its decisions can have national implications," they said in the letter. "The NFL’s lack of transparency about the problems it recently uncovered raises questions about the seriousness with which it has addressed bigotry, racism, sexism and homophobia — setting troubling precedent for other workplaces. 

"The committee is seeking to fully understand this workplace conduct and the league’s response, which will help inform legislative efforts to address toxic work environments and workplace investigation processes; strengthen protections for women in the workplace and address the use of non-disclosure agreements to prevent the disclosure of unlawful employment practices, including sexual harassment. We hope and trust that the NFL shares the committee’s goal of protecting American workers from harassment and discrimination."

The committee members also scrutinized the alleged "cozy" relationship between top NFL lawyer Jeff Pash and Allen. Those emails were revealed separately by The New York Times.

LANDOVER, MD - SEPTEMBER 11:  Owner Daniel Snyder of the Washington Redskins looks on before the game against the Minnesota Vikings on September 11, 2006 at FedExField in Landover, Maryland.  The Vikings won 19-16.  (Rob Tringali/SportsChrome/Getty Images)

In the letter to Goodell, Maloney and Krishnamoorthi expressed concerns about the numerous accusations made by former Washington cheerleaders to the Washington Post over the last few years and how the investigation yielded only a $10 million fine against team owner Daniel Snyder.

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"We have received the Chairwoman’s letter and share her concern that all workplaces should be free from any form of harassment and discrimination. We look forward to speaking to her office soon," NFL spokesman Brian McCarthy said in a statement to Fox News.