23 year-old forward Kristian Jensen knocked out Lucas Bjerre Rasmussen, who landed on the ice .

Rasmussen was helmetless, and pretty much defenseless .

Rasmussen’s head fell from the force of the blow to the ice, losing consciousness . 

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The diagnosis at the hospital was a severe concussion.

Jensen has apologized for the incident on the Frederikshavn White Hawks website.

He’s since been charged for the incident. 

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