'Ball slasher' accused of breaking into high school

'Ball slasher' accused of breaking into high school
He was arrested after his hunt for fresh victims (Supplied)

A 39-year-old man with a fetish for 'slashing balls' has been arrested again - after allegedly breaking into another high school in a search for fresh victims.

Christopher Neil Bjerkness was caught early on Wednesday (local time) after US police responded to a burglary-in-progress call at Superior High School.

When they arrived they found "numerous exercise balls which had been damaged", the Duluth News Tribune reports.

In total, Bjerkness had allegedly slashing 22 exercise balls at the school. Two exercise balls still haven't been accounted for.

Bjerkness, who has previously admitted to having a fetish for slashing exercise balls, told officers that he saw the exercise balls and popped "a rack and three quarters" using a car key.

He has been charged with burglary of a building or dwelling, a felony with a maximum sentence of more than 12 years in prison, as well as criminal damage to property and obstructing an officer, both misdemeanours.

Bjerkness has previous convictions for attacks on exercise balls, including a conviction in 2005 of slashing exercise balls at the University of Minnesota Duluth Sports and Health Center; a conviction in 2009 for slashing exercise balls at the St Mary's Duluth Clinic West building and a conviction in 2011 for breaking into the Chester Creek Academy fitness center, where several exercise balls were stored.