The University of Minnesota says it is investigating allegations that a former men's hockey assistant sexually abused players more than 30 years ago.

Athletic director Mark Coyle sent a letter to members of the 1984-85 hockey team after The Athletic sports website reported the allegations against former assistant Thomas “Chico” Adrahtas. The Athletic detailed Adrahtas’ exit from the Gophers program after several people went to the school’s athletic director at that time to report allegations of sexual abuse.

In a statement, the university said it “takes this disturbing report seriously” and has retained a law firm to determine what happened.

“The University is committed to providing support for our former students consistent with our public responsibilities and dedication to a supportive, inclusive and safe environment for our entire community,” the statement said.

Adrahtas did not immediately respond to a message left Monday night by The Associated Press on a cell phone believed to be his.

Adrahtas denied to The Athletic last week that he ever sexually abused anyone. His attorney also issued a statement to the website that said: “Mr. Adrahtas categorically and unequivocally denies the allegations that have been presented.”

The Athletic reported that multiple players told the website that Adrahtas, while coaching at Minnesota, approached players and offered to procure a woman to perform oral sex on them. Players said they came to believe it was Adrahtas who was performing the sex act. Tony Kellin, then a junior defenseman, said he was among players approached by Adrahtas with an offer to receive oral sex while blindfolded. Kellin said he reported it to then-athletic director Paul Giel.

The university said it has hired the Seattle-based law firm Perkins Coie to determine what happened. Perkins Coie was retained by Ohio State University to investigate former team doctor Richard Strauss. The report concluded that Strauss sexually abused at least 177 male students from the 1970s through the 1990s. The report concluded that scores of Ohio State personnel knew of complaints and concerns about Strauss’ conduct as early as 1979 but failed for years to investigate or take meaningful action.

The Athletic's report also comes at a time when several men alleging sexual abuse by a deceased University of Michigan doctor have retained law firms that are representing accusers who sued Michigan State University and Ohio State in similar cases. Stephen Estey, whose California firm has been hired by “several” men, said the parallels between the allegations about Dr. Richard Anderson at Michigan, which became public last week, and Strauss at Ohio State “are frightening because everyone knew the doctors were doing bad things.”

David Mittleman, a lawyer for more than 100 victims of imprisoned former Michigan State University sports doctor Larry Nassar, said his Michigan firm has been retained by four men who were allegedly assaulted by Anderson during medical exams, including two former athletes.

Adrahtas was a longtime amateur coach in the Chicago area who also coached in the North American Hockey League and in college at the Illinois-based Robert Morris University. Adrahtas is currently suspended from coaching any USA Hockey-sanctioned teams, pending the completion of a SafeSport investigation involving allegations from multiple former players who have come forward to say he abused them as young players in the 1980s.

SafeSport is a central clearinghouse that investigates reports of sexual misconduct and abuse within the national governing bodies under the USOC. The Athletic reported the SafeSport investigation was launched in September 2018 after one of Adrahtas’ former junior hockey players, Mike Sacks, sent a 14-paragraph letter to both the ACHA and Adrahtas’ then-employer, Robert Morris University, detailing what he described as a 20-month span of sexual abuse and exploitation in which he was an unwilling participant in sexual acts while bound by the ankles and blindfolded.

Multiple members of the 1984-85 Gophers team have participated in that investigation, which remains ongoing, The Athletic reported.

Jared Williamson, athletic director at Robert Morris University, did not immediately return a call from The Associated Press for comment Monday.