Calgary Flames general manager Brad Treliving announced Tuesday that coach Bill Peters has not been fired, citing an ongoing investigation into whether Peters directed racial slurs toward a former player.

Treliving cited the "serious nature" of the investigation, saying that the Flames "take it with extreme seriousness."

Sportsnet reported earlier Tuesday that the Flames had fired Peters, but Treliving told reporters he "has not been relieved of his duties; we are continuing this ongoing investigation right now."

Peters was not on the ice with the team as they practiced in Buffalo Tuesday and stayed back at the team hotel.

The allegations came from Akim Aliu, who played for Peters in 2009-10 with the Rockford Ice Hogs, the AHL affiliate of the Chicago Blackhawks.

Aliu posted a tweet Monday night that read: "Not very surprising the things we're hearing about Babcock. Apple doesn't fall far from the Tree, same sort of deal with his protege in YYC. Dropped the N bomb several times towards me in the dressing room in my rookie year because he didn't like my choice of music."

Not very surprising the things we're hearing about Babcock. Apple doesn't fall far from the Tree, same sort of deal with his protege in YYC. Dropped the N bomb several times towards me in the dressing room in my rookie year because he didn't like my choice of music. First one to

— Akim Aliu (@Dreamer_Aliu78) November 26, 2019

Aliu also addressed his allegations to TSN on Tuesday. He said Peters told him to stop playing hip-hop that the coach called "n----- s---." Aliu said he did not confront Peters at the time.

"What am I going to say? I was 20 years old and a first-year pro. I was too scared to speak up," Aliu told TSN. "I beat myself up every day over it."

Two of Aliu's Rockford teammates, Simon Pepin and Peter MacArthur, independently corroborated Aliu's account to TSN on Tuesday.

In a statement Tuesday, the NHL called the alleged behavior "repugnant and unacceptable" and said it would thoroughly look into the matter.

The Blackhawks also responded to the allegations in a statement Tuesday.

"The alleged actions by a former coach toward Akim Aliu while with the Rockford IceHogs are something we take seriously," the team said. "The purported incident had not been reported or brought to our attention prior to yesterday and had no effect on any player personnel decision regarding Mr. Aliu."

Aliu, now 30, was born in Nigeria but grew up in Ukraine and Canada. He most recently played for the Orlando Solar Bears of the ECHL in 2018-19. He played seven games in the NHL in the 2011-12 and 2012-13 seasons -- both with the Flames. However, Peters was not the coach at the time.

Aliu followed his accusations on Twitter by posting: "First one to admit I rebelled against him. Wouldn't you? And instead of remedying the situation, he wrote a letter to John McDonough and Stan Bowman to have me sent down to the ECHL. 20-year-old on pace for 20 goals in his first pro year with zero PP/PK time was off to a great start in his pro career."

admit I rebelled against him. Wouldn't you? And instead of remedying the situation, he wrote a letter to John McDonough and Stan Bowman to have me sent down to the ECHL. 20 year old on pace for 20 goals in his first pro year with zero PP/PK time was off to a great start in his

— Akim Aliu (@Dreamer_Aliu78) November 26, 2019

Pro career

— Akim Aliu (@Dreamer_Aliu78) November 26, 2019

Aliu told TSN that he would have accepted Peters' apology if he had received one.

McDonough is the president of the Blackhawks, and Bowman is the general manager.

Information from ESPN's Emily Kaplan was used in this report.