The Dallas Stars abruptly fired head coach Jim Montgomery on Tuesday morning for unspecified “unprofessional conduct,” a move that comes as the National Hockey League has launched new initiatives meant to reckon with its culture and the bad behavior it sometimes enables.

The reason behind Montgomery’s dismissal wasn’t disclosed, though it doesn’t appear to be tied to the team’s performance. Currently 17-11-3, Dallas is in sixth place in the Western Conference and fourth in the Central Division.

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