Washington Commanders owner Dan Snyder repeatedly tried to obstruct and interfere with investigations into his team’s workplace — which has been under fire following allegations of decades of sexual misconduct — according to a final report the House Committee of Oversight and Reform issued Thursday.

The 79-page report follows an investigation the House committee launched last October into the Commanders’ workplace culture. The investigation unearthed new evidence that Snyder allowed and took part in sexual misconduct, creating a decades-long “toxic work environment” and “culture of fear.” The report also details the National Football League’s role in perpetuating that culture and in trying to hamper investigations into Snyder and the Commanders.

House Oversight Committee Chairwoman Rep. Carolyn B. Maloney called the committee’s findings “damning” and said they should serve as a call to action to her colleagues.

“Our report tells the story of a team rife with sexual harassment and misconduct, a billionaire owner intent on deflecting blame, and an influential organization that chose to cover this up rather than seek accountability and stand up for employees,” Maloney said in a statement. “To powerful industries across the country, this report should serve as a wake-up call that the time of covering up misconduct to protect powerful executives is over.”

The report details how Snyder repeatedly refused to cooperate with investigators, declining to show up at a public hearing and avoiding accepting service of a subpoena “while abroad on his yacht.” When he eventually sat for a private deposition, Snyder avoided giving full and complete testimony, claiming more than 100 times that he could not remember answers to the committee’s questions — including basic ones about his role as the team’s owner and misconduct allegations, according to the report.

Still, the Committee went on to gather new evidence over the past year, in part from whistleblowers, of “rampant misconduct and a toxic work culture” — a culture the report says began shortly after Snyder bought the team in 1999 and continued for roughly two decades. Among the many who stepped forward over the past year are Tiffani Johnston, a former cheerleader and marketing manager for the team who says she was sexually harassed dozens of times by Snyder and others. Many other former employees had similar stories, summarized in the report, and said Commanders leadership failed to respond to concerns they raised about misconduct.

Snyder had also attempted to interfere with an earlier, 10-month investigation led by attorney Beth Wilkinson, who found that sexual harassment, bullying, and intimidation were prevalent for years. (The Commanders were fined $10 million as a result.) Launching a shadow investigation, Snyder sent private investigators to the homes of former employees and offered hush money to silence them. The report says Snyder gave “misleading testimony” about those efforts.

Snyder also sent private investigators to the home of former team president Bruce Allen, a one-time ally whom Snyder has accused of being responsible for workplace misconduct.

The Committee found that the NFL was aware of Snyder’s efforts to interfere with the Wilkinson investigation, but “downplayed” these efforts. The NFL also was aware of Snyder’s “surveillance, harassment, and intimidation” of women who had spoken out.

In response to the report, the NFL said that it was committed to ensuring all employees were working in environments “free from discrimination, harassment, or other forms of illegal or unprofessional conduct” and that there have been significant improvements recently in workplace culture and policies.

“No individual who wished to speak to the Wilkinson firm was prevented from doing so by non-disclosure agreements,” the NFL said in a statement. “Many of the more than 150 witnesses who participated in the Wilkinson investigation did so on the condition that their identities would be kept confidential.”

The NFL added that it had cooperated extensively with the Committee’s investigation, producing “nearly a half million pages of documents, responding to dozens of written inquiries, and voluntarily participating in a two-and-a-half hour public hearing during which Commissioner [Roger] Goodell answered 128 questions.”

In response to a request for comment from DCist/WAMU, Jean Medina, Chief of Communications for the Commanders, forwarded a 210-page House Minority Report issued Wednesday, where Committee Republicans dismiss the investigation as a politically motivated attack. In one paragraph, which Medina highlighted, the report notes that Amazon founder Jeff Bezos, who owns the Washington Post, showed interest in buying the team. Republicans allege that the investigation’s goal was to remove Snyder (who’s been called the NFL’s Trump) and replace him with “the owner of a left-leaning newspaper sympathetic to the Democratic party.” Republicans have said they would discontinue investigations into Snyder when they take control of the House next year.

Counsel for the Washington Commanders John Brownlee and Stuart Nash criticized the report as “the predictable culmination” of a “one-sided approach.”

“The team is proud of the progress it has made in recent years in establishing a welcoming and inclusive workplace, and it looks forward to future success, both on and off the field,” they said.