In the letter, which was shared on social media by Eric Francis of Sportsnet, Peters apologizes to the Flames for the incident initially alleged Monday by Akim Aliu, who played for Peters in Rockford that season.
The NHL and Flames each announced Tuesday they are investigating the incident
Following the game, Treliving said the Flames have received the letter, consider the incident a "serious matter," and could have an update on the Peters situation as early as Thursday.
"This investigation we're doing, I know everyone wants this done immediately and the world we live in is immediate," Treliving said. "We are not trying to stall or take time or drag our feet. It's a serious matter. And it's involving serious subject matter. I just want to make sure we are doing a thorough job in looking under every stone, rock and doing all the things that need to be done."
Here is Peters' letter to Treliving:
"Please accept this as a sincere apology to you, and the entire Calgary Flames organization, for offensive language I used in a professional setting a decade ago. I know that my comments have been the source of both anger and disappointment, and I understand why. Although it was an isolated and immediately regrettable incident, I take responsibility for what I said.
"The statement was made in a moment of frustration and does not reflect my personal values. After the incident, I was rightfully challenged about my use of language, and I immediately returned to the dressing room to apologize to the team. I have regretted the incident since it happened, and I now apologize to anyone negatively affected by my words.
"I am aware that there is no excuse for language that is offensive. I meant no disrespect in what I said, and it was not directed at anyone in particular. But, that doesn't matter; it was hurtful and demeaning. I am truly sorry.
"I accept the reality of my actions. I do believe that we must strive to act with integrity, and to take accountability for what we say and do. This letter is intended to do exactly that; I hope it is accepted as intended.
"I appreciate the thorough review of this situation being undertaken by the Flames. It's the right thing to do, and I support it fully."
