Teen Killed in Accident on Exercise Machine Death ruled 'very tragic accident' By Emily Rauhala, Newser User Posted Sep 22, 2010 3:37 AM CDT 11 comments Comments File photo of a generic exercise machine. (Shutterstock) (Newser) – A high school football player from Sacramento was killed in an exercise machine accident. Justin Butler, 16, was found entangled in a Bowflex machine. Investigators say they don't suspect the machine is to blame, nor do they believe it was a suicide. Butler's death was simply a "very tragic accident," an investigator tells CBS 13.