Teyo Johnson of the Calgary Stampders had been battling an ankle injury before Thursday's incident. (Chris Young/Canadian Press)

Teyo Johnson of the Calgary Stampeders is in the hospital after being stabbed with a knife at a concert Thursday night.

Stampeders coach John Hufnagel told reporters that Johnson's vital organs were not damaged, but he won't play in the team's home playoff game Sunday against the Edmonton Eskimos.

CBC News has learned Johnson was attending a DJ Tiesto concert in the Big Four building on the Stampede Grounds when he was stabbed in the lower back.

Officers were already on the scene when an altercation started, said duty Insp. Rob Williams of the Calgary Police Service.

"The officers approached where this melee had happened and one noticed blood on the back of this victim's shirt. He was transported to hospital with a single stab wound which was not life-threatening," said Williams.

Police recovered a knife from the scene, and arrested one person who was later released and is not a suspect. The investigation will continue, said Williams.

Johnson has 33 catches for 420 yards and four touchdowns in 20 games with the Stampeders over the past two seasons. He has played tight end and fullback in his career.

The incident comes just as Johnson was almost fully recovered from an ankle injury suffered Oct. 17 against Saskatchewan.

Johnson, who turns 28 later this month, joined Calgary before last season after several years in the NFL. He was drafted in the second round by Oakland in 2003 and last played south of the border with the Buffalo Bills.

He is the brother of Montreal Alouettes defensive lineman Riall Johnson.

With files from The Canadian Press