Chicago Blackhawks star Andrew Shaw was under fire Tuesday night after a late-game meltdown in a Game 4 loss to the St. Louis Blues.

Video showed Shaw appear to yell a gay slur from the penalty box, after he was whistled for a costly interference penalty in the final minutes of the 4-3 loss, which pushed the Blackhawks to the brink of elimination.

Shaw, who had a goal and two assists, was evasive afterward, saying "Emotions are high. I don't know what I said."

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As some of you may know, I'm a gay sportswriter -- who covers the #Blackhawks. I like Andrew Shaw and have a good relationship with him ...

— Chris Hine (@ChristopherHine) April 20, 2016

But what he said tonight was inexcusable and is one of the reasons why gay athletes everywhere stay closeted and often live lives of torment

— Chris Hine (@ChristopherHine) April 20, 2016

The You Can Play Project, a prominent gay rights group affiliated with the NHL, says it plans to reach out to the league "to assist in an appropriate response."

I take it back, Shaw's completely getting suspended for this. https://t.co/6VcXRtHAKR

— Greg Wyshynski (@wyshynski) April 20, 2016

Given his RFA status, it's distinctly possible that Andrew Shaw played his last game with the #Blackhawks tonight. https://t.co/6kLJVRkVXO

— Mark Lazerus (@MarkLazerus) April 20, 2016

The Associated Press contributed to this report.