Six students have been expelled from Dean College in Massachusetts, after a student was beaten up in an attack that was recorded on video. The video was posted online and shows a man punching another man, knocking him to the ground while beating him with his own sneakers.

The fight appears to have been over a pair of stolen sneakers.

The college issued a statement saying student safety is a top priority.

“The safety of all members of our community has always been and will continue to be our first priority, and Dean has zero tolerance for conduct that is detrimental to the safety and well-being of its students, faculty and staff. I know that we are all deeply saddened by what has transpired.” Dean College president Paula Rooney said in a statement.