Flames head coach Bill Peters apologized for using a racial slur a decade ago in a letter he wrote to Calgary general manager Brad Treliving, according to Sportsnet's Eric Francis.

Former NHL defenseman Akim Aliu tweeted Monday night that Peters directed the N-word toward him several times 10 years ago with the IceHogs, the Chicago Blackhawks' AHL affiliate.

On Tuesday, Peters was accused of physical abuse during his time as the head coach of the Carolina Hurricanes by former NHLer Michal Jordan. Rod Brind'Amour, Carolina's current head coach and former assistant under Peters, says the abuse "for sure happened." Peters' letter, however, makes no mention of the physical abuse allegations.

Peters was not behind the bench for Calgary's game on Wednesday as the club continues its investigation of the head coach.

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