A high school hockey coach was knocked to the ice during practice, hit his head and suffered a critical brain injury.

Jason Jensen was working with the Holy Family girls team at the Recreation Center in Victoria on Friday when a player ran into him, his wife said Monday.

Jensen did not have on a helmet, a piece of equipment that is not required in Minnesota for coaches during high school practices.

“He was standing at the goalpost talking with his goalie, and another player lost her [skate] edge” and knocked Jason Jensen down, Kelly Jensen said.

“It was a complete accident,” she said. “It caught him off guard, and he just fell back.”

For more on Jensen, click here to read this story on startribune.com.