Flames coach Bill Peters acknowledged in a letter of apology on Wednesday that he used offensive language in dealing with a Nigerian-born player 10 years ago in the minors.

GM Brad Treliving confirmed receipt of the letter, which was first posted on Twitter by TSN, a Canadian sports cable network, during the third period of Calgary's 3-2 overtime victory at Buffalo. Treliving would only say the Flames are reviewing the letter as part of their continuing investigation into Peters, and that the GM could have an update as early as Thursday.