18/10/2012 15:07 BST

Shocking Foul In Women's Football Match (VIDEO)

The cutthroat world of the American high school has long been established, but separating fiction from fact comes an act of violence at Salt Lake High School courtesy of Petiola Manu.

For no apparent reason, during the match between Utah high schools East High and Woods Cross, schoolgirl Manu decides to knee Makenzie Clark in the face, as you can see for yourself.